Updated on 2024/04/01

写真a

 
Kato Masaru
 
Organization
Graduate School of Engineering Division of Physics and Electronics Associate Professor
School of Engineering Department of Physics and Electronics
Title
Associate Professor
Affiliation
Institute of Engineering

Position

  • Graduate School of Engineering Division of Physics and Electronics 

    Associate Professor  2022.04 - Now

  • School of Engineering Department of Physics and Electronics 

    Associate Professor  2022.04 - Now

Degree

  • 理学博士 ( Kyoto University )

Research Areas

  • Natural Science / Magnetism, superconductivity and strongly correlated systems  / Theory of Condensed Matter

  • Natural Science / Magnetism, superconductivity and strongly correlated systems

Research Interests

  • 超伝導

  • Theory of Condensed Matter

  • 強相関電子系

  • 物性理論

Research subject summary

  • 超伝導体中の渦糸の分子動力学法によるシミュレーション

  • 固有ジョセフソン接合系におけるTHz発振のシミュレーション

  • 超伝導体中の渦糸構造の微視的、現象論的シミュレーション

  • 非平衡超伝導体の数値シミュレーション

  • 超伝導ネットワーク

  • ナノ超伝導複合体d-dot

Professional Memberships

  • 低温工学

    2018.12 - Now   Domestic

  • アメリカ物理学会

    1996.04 - Now   Overseas

  • 日本物理学会

    1985.04 - Now   Domestic

  • アメリカ物理学会(American Physical Society)

  • 日本物理学会

Committee Memberships (off-campus)

  • 幹事   ボルテックスフォーラム  

    2018.12 - 2024.03 

  • 代議員   日本物理学会  

    2016.04 - 2017.03 

  • 代議員   日本物理学会  

    2015.04 - 2016.03 

  • 代議員   日本物理学会  

    2014.04 - 2015.03 

Awards

  • IAAM Scientist Award

    Masaru Kato

    2020.10   International Association of Advanced Materials (IAAM)   Superconductivity in nano-size

  • IAAM (International Association of Advanced Materials) Scientist Award

    2020.10   International Association of Advanced Materials  

Job Career (off-campus)

  • - Osaka Prefecture University,

    1995

  • - 大阪府立大学 助教授

    1995

  • Osaka Prefecture University

    1995

  • Osaka Prefecture University, Lecturer

    1995

  • Associate Professor

  • Visiting Scholar

  • Research Assistant

▼display all

Papers

  • Transition Temperature of a Superconductor under a Helical Magnetic field Reviewed

    M. Kato

    Journal of Physics: Conference Series   2545   012007   2023.08

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    Authorship:Lead author, Last author, Corresponding author   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1742-6596/2545/1/012007

    Other URL: https://iopscience.iop.org/article/10.1088/1742-6596/2545/1/012007

  • Three-Dimensional Molecular Dynamics Method for Vortex pinning by Splayed Columnar Defects

    Kato M.

    Journal of Physics: Conference Series   2323 ( 1 )   2022.08( ISSN:17426588

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    Authorship:Lead author, Last author, Corresponding author  

    DOI: 10.1088/1742-6596/2323/1/012014

  • Simulation of switching to voltage state in an intrinsic Josephson junction

    Wachi T, M, Kato

    Journal of Physics: Conference Series   2323 ( 1 )   2022.08( ISSN:17426588

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    Authorship:Last author, Corresponding author  

    DOI: 10.1088/1742-6596/2323/1/012015

  • Microscopic Analysis of Flux Structure in a Dirty Superconductor Reviewed

    T. Tamai T. Nishizaki M. Kato

    IEEE Transactions on Applied Superconductivity   Vol. 32 ( 4 )   8000604-1 - 8000604-4   2022.06

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    Authorship:Last author, Corresponding author   Kind of work:Joint Work   International / domestic magazine:International journal  

  • Phenomenological Simulations of Intermediate States in a Type I Superconducting Wire Reviewed

    Y. Mizuhara and M. Kato

    Journal of Physics: Conference Series   2207   012040-1 - 012040-6   2022.03

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    Authorship:Last author, Corresponding author   Publishing type:Research paper (scientific journal)   Kind of work:Joint Work   International / domestic magazine:International journal  

    DOI: 10.1088/1742-6596/2207/1/012040

  • Novel vortex structures in a three-dimensional superconductor under a helical magnetic field from a chiral helimagnet Reviewed International coauthorship

    S. Fukui, M. Kato, Y. Togawa, O. Sato

    Physica C 雑誌   589   1353918-1 - 1353918-11   2021.10

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    Publishing type:Research paper (scientific journal)   Kind of work:Joint Work   International / domestic magazine:International journal  

  • Structures of vortices in a superconductor under a tilted magnetic field Reviewed

    H. Yokoji and M. Kato

    Journal of Physics: Conference Series 雑誌   1975   2021.07

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    Kind of work:Joint Work  

  • Dependences of local density of state on temperature, size, and shape in two-dimensional nano-structured superconductors Reviewed

    S. Fukui, Z. Wang,, M. Kato

    Physica C 雑誌   580   2021.01

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    Kind of work:Joint Work  

  • Simulation of THz oscillations in an intrinsic Josephson junction array

    Yusuke Fujiki, Masaru Kato

    Journal of Physics: Conference Series   1590 ( 1 )   2020.07( ISSN:1742-6588

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    Publishing type:Research paper (international conference proceedings)  

    © Published under licence by IOP Publishing Ltd. When a voltage is applied to coupled Josephson junctions, an ac current flows because of the Josephson effect. Due to this ac current, an electromagnetic (EM) wave is emitted from junctions. For the cuprate High-Tc superconductor, frequency of the EM wave reaches to the THz regime since the energy gap is large. In order to simulate the EM wave in the superconductors, we solve the Josephson junction relations and the Maxwell equations simultaneously. Especially, we consider coupling of junctions including capacitive and inductive couplings, and spatial variations of phase differences of order parameters inside of junctions. We shows time developments of distributions of the phase differences, magnetic and electric fields in junctions in the transient state.

    DOI: 10.1088/1742-6596/1590/1/012018

  • Effects of artificial square nanorods array to square bulk superconducting plate Reviewed

    Takashi Kusafuka, Masaru Kato, Yuji Tsuchiya

    Journal of Physics: Conference Series   1590 ( 1 )   2020.07( ISSN:1742-6588

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    Publishing type:Research paper (international conference proceedings)   International / domestic magazine:International journal  

    © Published under licence by IOP Publishing Ltd. It is known that the superconducting properties are improved by adding nanorods to a superconductor. As increasing nanorods into superconductor, the pinning force becomes stronger. Using the molecular dynamics method, we investigate vortex motions in a superconductor with a nanorod array. We obtain trajectories of vortices and standard deviation of vortex positions. We find peculiar temperature dependence of vortex motion.

    DOI: 10.1088/1742-6596/1590/1/012002

  • Local Density of States of Quasi-Particles around a Vortex Core in a Square Superconducting Plate with a Random Impurity Potential

    Takayuki Tamai, Masaru Kato

    Journal of Physics: Conference Series   1590 ( 1 )   2020.07( ISSN:1742-6588

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    Publishing type:Research paper (international conference proceedings)  

    © Published under licence by IOP Publishing Ltd. We have solved the Bogoliubov-de Gennes equation with a random impurity potential Vimp(r) under an external magnetic field with the finite element method and obtained the local density of states and the order parameter around a vortex. From these results, we find two properties of a vortex structure in a dirty superconductor. First, the order parameter structure around the vortex is deformed by the impurity potential. Second, distributions of bound states is also deformed, but these deformations of the order parameter and bound states do not correspond with each other.

    DOI: 10.1088/1742-6596/1590/1/012001

  • Local Density of States of Quasi-Particles around a Vortex Core in a Square Superconducting Plate with a Random Impurity Potential Reviewed

    T. Tamai, M. Kato

    J. Phys.: Conf. Ser. 雑誌   1590   2020.07

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    Kind of work:Joint Work  

  • Simulation of THz oscillations in an intrinsic Josephson junction array Reviewed

    Y. Fujiki and M. Kato

    J. Phys.: Conf. Ser. 雑誌   1590   2020.07

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    Kind of work:Joint Work  

  • Local density of States in Two-Dimensional Nano-Structured Superconducting Systems with Superconductor-Normal Metal Interfaces Reviewed

    S. Fukui, Z. Wang, M. Kato

    J. Phys.: Conf. Ser. 雑誌   1590   2020.07

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    Kind of work:Joint Work  

  • Effects of artificial square nanorods array to square bulk superconducting plate Reviewed

    T. Kusafuka, M. Kato, Y. Tsuchiya

    J. Phys.: Conf. Ser. 雑誌   1590   2020.07

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    Kind of work:Joint Work  

  • Simulation of vortex lattice melting in a dirty square superconducting plate Reviewed

    Takashi Kusafuka, Masaru Kato, Osamu Sato

    Journal of Physics: Conference Series   1293 ( 1 )   2019.10( ISSN:1742-6588

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    Publishing type:Research paper (international conference proceedings)  

    © 2019 Published under licence by IOP Publishing Ltd. Vortex lattice melting in a dirty mesoscopic square superconducting plate is studied using the molecular dynamics (MD) method. We include an impurity potential in the MD method and investigate vortex number and impurity number dependences of the melting transition temperature. We find strong vortex number dependence and weak pinning potential dependence of the melting temperature.

    DOI: 10.1088/1742-6596/1293/1/012021

  • Critical states in two overlapped rectangular superconducting plates Reviewed

    Shinsuke Ooi, Masaru Kato

    Journal of Physics: Conference Series   1293 ( 1 )   2019.10( ISSN:1742-6588

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    © 2019 Published under licence by IOP Publishing Ltd. We study vortex penetration into two-layer structures of superconducting plates under a perpendicular magnetic field. We solve the heat transport equation and the Maxwell equations with the current-voltage relation for superconductor, simultaneously, and obtain magnetic flux and current densities. We show how magnetic flux structure depends on the structure, especially distance of two-layer of superconductors.

    DOI: 10.1088/1742-6596/1293/1/012020

  • Gigantic T <inf>c</inf> enhancement in dirty nano-sized superconductor Reviewed

    Masaki Umeda, Masaru Kato

    Journal of Applied Physics   126 ( 14 )   2019.10( ISSN:0021-8979

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    Publishing type:Research paper (scientific journal)  

    © 2019 Author(s). Superconducting critical temperature T c for a dirty nanosized square s-wave superconducting plate becomes five times higher than that of a pure bulk superconductor. T c is obtained by solving the Bogoliubov-de Gennes equations with the finite element method. As the dirty superconductor, we consider a superconductor with a spatially random potential for superconducting electrons. We show that the enhancement of T c comes from cooperation of size effects and impurity effects, both of which increase the local density of the Cooper pairs.

    DOI: 10.1063/1.5094461

  • Impurity effects on nano-structured dirty superconductors: violation of Anderson's Theorem Reviewed

    M. Umeda, M. Kato

    Journal of Physics Communications 雑誌 IOP Publishing   3 ( 10 )   2019.10

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    Kind of work:Joint Work  

  • Critical states in two overlapped rectangular superconducting plates Reviewed

    S. Ooi, M. Kato

    Journal of Physics: Conf. Series 雑誌 IOP Publishing   1293 ( 1 )   2019.10

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    Kind of work:Joint Work  

  • Simulation of vortex lattice melting in a dirty square superconducting plate Reviewed

    T. Kusafuka, M. Kato, O. Sato

    Journal of Physics: Conf. Series 雑誌 IOP Publishing   1293 ( 1 )   2019.10

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    Kind of work:Joint Work  

  • Gigantic Tc enhancement in dirty nano-sized superconductor Reviewed

    M. Umeda, M. Kato

    Journal of Applied Physics 雑誌 AIP   126 ( 14 )   2019.10

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  • Impurity effects on nano-structured dirty superconductors: Violation of Anderson’s theorem Reviewed

    Masaki Umeda, Masaru Kato

    Journal of Physics Communications   3 ( 10 )   2019.10

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    © 2019 The Author(s). It is shown that in nano-structured s-wave superconductor, transition temperature Tc depends on random impurity potentials. This means violation of the Anderson’s theorem, which states that non-magnetic impurity does not affect the Tc of s-wave superconductor. We determine the impurity effects on Tc for nano-structured superconductor, using the finite element method to solve the Bogoliubov-de Gennes equations under spatially a random impurity potential. We show that some impurity potentials increase Tc but other impurity potentials decrease Tc. We find that the superconductor with localized order parameter shows increased Tc, which is contrary to expectation. Our results show that a dirty superconductor does not always mean weak superconductivity.

    DOI: 10.1088/2399-6528/ab4608

  • Transition temperature enhancement of nano-structured superconductors: Shape dependence and effects of Cooper pair distribution Reviewed

    Masaki Umeda, Masaru Kato

    Physica C: Superconductivity and its Applications   560   45 - 66   2019.05( ISSN:0921-4534

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    Publishing type:Research paper (scientific journal)  

    © 2019 Enhancement of superconducting critical temperature T c for nano-structured square and rectangular plates is investigated, using the Gor'kov equations and the finite element method. T c increases with decreasing system size and shows sawtooth behavior as the function of system size. We find the enhancement of T c becomes larger for narrower rectangular plate. We discuss mechanisms of these behaviors of T c , investigating quasi-particle eigen-energies and spatial order parameter distributions.

    DOI: 10.1016/j.physc.2019.02.012

  • Transition temperature enhancement of nano-structured superconductors: Shape dependence and effects of Cooper pair distribution Reviewed

    M. Umeda, M. Kato

    Physica C 雑誌 Elsevier   560   45 - 66   2019.05

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    Kind of work:Joint Work  

  • Erratum: Confined vortices in de facto mesoscopic Mo <inf>80</inf> Ge <inf>20</inf> disks with sector defects (Superconductor Science and Technology (2018) 31 (125009) DOI: 10.1088/1361-6668/aae506) Reviewed

    The Dang Vu, Ho Thanh Huy, Atsuki Ito, Masaki Toji, Hiroaki Shishido, Masaru Kato, Masahiko Hayashi, Takekazu Ishida

    Superconductor Science and Technology   32 ( 1 )   2019.01( ISSN:0953-2048

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    © 2018 IOP Publishing Ltd Printed in the UK. During the conversion of the graphics in the production process, some data in the x axes labels were lost in figures 4(i) and (k). The complete version of figure 4 is given below. (Figure Presented).

    DOI: 10.1088/1361-6668/aaf0af

  • Confined vortices in de facto mesoscopic Mo80Ge20 disks with sector defects Reviewed

    T. D.Vu, H. T. Huy, A. Ito, M. Toji, H. Shishido, M. Kato M. Hayashi, T. Ishida

    Superconductor Science and Technology 雑誌   31 ( 12 )   2018.12

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    Kind of work:Joint Work  

  • Vortex structures and configurations in a superconductor under helical magnetic field Reviewed

    S. Fukui, M. Kato, Y. Togawa, O. Sato

    AIP Advances 雑誌   8 ( 10 )   2018.10

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    Kind of work:Joint Work  

  • Phase Transition of Vortex States in Two-Dimensional Superconductors under a Oscillating Magnetic Field from the Chiral Helimagnet Reviewed

    S. Fukui, M. Kato, Y. Togawa, O. Sato

    J. Phys. Soc. Jpn 雑誌   87 ( 8 )   2018.08

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    Kind of work:Joint Work  

  • Constructing a Vector Scanning SQUID System Reviewed

    V. T. Dang, M. Toji, A. Ito, Y. Ninomiya, S. Miyajima, H. T. Huy, H. Shishido, M. Kato, M. Hidaka, M. Hayashi, T. Ishida

    Journal of Physics: Conf. Ser. 雑誌   1054   2018.07

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    Kind of work:Joint Work  

  • Effects of chirality of a helical magnetic field on a superconductor Reviewed

    S. Fukui, M. Kato, Y. Togawa, O. Sato

    Journal of Physics: Conf. Ser. 雑誌   1054   2018.07

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    Kind of work:Joint Work  

  • Size effects of critical temperatures and order parameter distributions under four-fold symmetry of nano-structured superconductors Reviewed

    M. Umeda, M. Kato, O. Sato

    Journal of Physics: Conf. Ser. 雑誌   1054   2018.07

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    Kind of work:Joint Work  

  • Critical states in a superconducting plate: Effects of heat generation from flux motion Reviewed

    S. Ooi, M. Kato

    Journal of Physics: Conf. Ser. 雑誌   1054   2018.07

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    Kind of work:Joint Work  

  • Magnetic field dependence of most stable vortex states in the chiral helimanget / superconductor bilayer system Reviewed

    S. Fukui, M. Kato, Y. Togawa

    Journal of Physics Conf. Ser. 雑誌   871   2017.07

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    Kind of work:Joint Work  

  • A variety of vortex state solutions of Ginzburg-Landau equation on superconducting mesoscopic plates Reviewed

    O. Sato, M. Kato

    Journal of Physics Conf. Ser. 雑誌   871   2017.07

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    Kind of work:Joint Work  

  • Molecular Dynamics Simulation on Vortex Lattice Melting in Meso-scopic Superconductors Reviewed

    M. Kato, H. Kitago

    Journal of Physics Conf. Ser. 雑誌   871   2017.07

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    Kind of work:Joint Work  

  • Simulations of vortices in a star-shaped plate with an artificial pin Reviewed

    H. Miyoshi, A. Ito, V. T. Dang, H T. Huy, M. Hayashi, M. Kato, T. Ishida

    Journal of Physics Conf. Ser. 雑誌   871   2017.07

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    Kind of work:Joint Work  

  • Fractional vortices in a nano-scaled superconducting composite structure (d-dot) with a twin boundary Reviewed

    N. Fujita, M. Kato, T. Ishida

    Journal of Physics Conf. Ser. 雑誌   807   2017.04

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    Kind of work:Joint Work  

  • Vortex states in a superconductor under a helical magnetic field Reviewed

    S. Fukui, M. Kato, Y. Togawa

    Journal of Physics Conf. Ser. 雑誌   807   2017.04

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    Kind of work:Joint Work  

  • Magnetic flux distributions in chiral helimagnet /superconductor bilayers Reviewed

    M. Kato, S. Fukui, O. Sato, Y. Togawa

    Physica C 雑誌   Vol. 533   137 - 143   2017.02

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    Kind of work:Joint Work  

  • Vortex distribution in small star-shaped Mo80Ge20 plate Reviewed

    T. D. Vu, H. Matsumoto, H. Miyoshi, H. T. Huy, H. Shishido, M. Kato, T. Ishida

    Physica C 雑誌   Vol. 533   44 - 48   2017.02

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    Kind of work:Joint Work  

  • Effects of chiral helimagnets on vortex states in a superconductor Reviewed

    S. Fukui, M. Kato, Y. Togawa

    Superconductor Science and Technology 雑誌   Vol. 29   125008(1 - 8)   2016.12

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    Kind of work:Joint Work  

  • Dependence of vortex states in superconductors on a chiral helimagnet and an applied magnetic field Reviewed

    S. Fukui, M. Kato, Y. Togawa

    Physica C 雑誌   Vol. 530   51 - 54   2016.11

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    Kind of work:Joint Work  

  • Vortex distribution in amorphous Mo80Ge20 plates with artificial pinning center Reviewed

    H. Matsumoto, H. T. Huy, H. Miyoshi, T. Okamoto, V. T. Dang, M. Kato, T. Ishida

    Physica C 雑誌   Vol. 530   46 - 50   2016.11

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    Kind of work:Joint Work  

  • Odd-frequency Spin-triplet Superconductivity in Nano-sized Superconductors under a Magnetic Field: Effects of Phonons Reviewed

    M. Kashiwagi, M. Kato

    Physics Procedia 雑誌   Vol. 81   29 - 32   2016.04

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    Kind of work:Joint Work  

  • Size, Shape, and Impurity Effects on Transition Temperatures of Nanostructured Superconductors Reviewed

    M. Umeda, M. Kato, O. Sato

    IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 雑誌   Vol. 26   8600104 (1 - 4)   2016.04

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    Kind of work:Joint Work  

  • Ginzburg-Landau Calculations of Star-shaped Mo80Ge20 Superconducting Small Plates Reviewed

    H. Miyoshi, M. Kato, H. T. Huy, V. T. Dang, H. Matsumoto, N. Fujita, T. Ishida

    Physics Procedia 雑誌   Vol. 81   89 - 92   2016.04

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    Kind of work:Joint Work  

  • Ginzburg-Landau Calculations of Circular Mo80Ge20 Plates with Sector Defect Reviewed

    T. D. Vu, H. T. Huy, H. Matsumoto, H. Miyoshi, S. Miyajima, H. Shishido, M. Kato, T. Ishida

    Physics Procedia 雑誌   Vol. 81   93 - 96   2016.04

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    Kind of work:Joint Work  

  • Twin boundary effects on spontaneous half-quantized vortices in superconducting composite structures (d-dot’s) Reviewed

    N. Fujita, M. Kato, T. Ishida

    Physica C 雑誌   518   2015.11

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  • Excitation spectra and wave functions of quasiparticle bound states in bilayer Rashba superconductors Reviewed

    Y. Higashi, Y. Nagai, T. Yoshida, M. Kato, Y. Yanase

    Physica C 雑誌   518   2015.11

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    Kind of work:Joint Work  

  • Vortex Structure in Chiral Helimagnet /Superconductor Bilayer Structure Reviewed

    S. Fukui, M. Kato, Y. Togawa

    Physics Procedia 雑誌   65   2015.05

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    Kind of work:Joint Work  

  • Extended Molecular Dynamics Methods for Vortex Dynamics in Nano-structured Superconductors Reviewed

    M. Kato, O. Sato

    Physics Procedia 雑誌   65   2015.05

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    Kind of work:Joint Work  

  • Spatial Dependence of Odd-frequency Spin-triplet Superconducting Order Parameter in Nano-sized s-wave Superconductors Under a Magnetic Field Reviewed

    M. Kashiwagi, M. Kato

    Physics Procedia 雑誌   65   2015.05

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    Kind of work:Joint Work  

  • Inhomogeneous Electronic Distribution in High-Tc Cuprates Reviewed

    S. Koikegami, M. Kato, T. Yanagisawa

    J. Phys. Soc. Jpn. 雑誌   84 ( 5 )   2015.05

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  • Magnetic Flux Structures in Nano-Sized Multiband Superconductors Reviewed

    M. Kato, Y. Niwa

    JPS Conference Proceedings 雑誌 Japanese Physical Society   Vol. 3   2014.06

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    Kind of work:Joint Work  

  • Vortex Dynamics in Nano-Sized Superconductors Reviewed

    Masaru Kato, David E. Fujibayashi, Osamu Sato

    JPS Conference Proceedings Japanese Physical Society   1   2014

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  • Magnetic flux structures of finite superconducting networks Reviewed

    M. Kato, O. Sato

    superconductor Science and Technology 雑誌   26   033001(1 - 26)   2013.03

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    Kind of work:Joint Work  

  • Appearance of Magnetization around a Pair of Half-Quantum Vortices in Chiral p-Wave Superconductors Reviewed

    Y. Niwa, M. Kato, K. Maki

    Journal of Physical Society of Japan 雑誌 Physical Society of Japan   82   034720.1 - 10   2013.03

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    Kind of work:Single Work  

  • Direct observation of vortices by scanning SQUID microscope on small superconducting Mo80Ge20 circular disks Reviewed

    Ho Thanh Huy, H. Shishido, M. Hayashi, T. Yotsuya, M. Kato, T. Ishida

    Physica C 雑誌 Elsevier   484   86 - 90   2013.01

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    Kind of work:Joint Work  

  • Vortex dynamics in corbino disks: Molecular dynamics simulation with thermal effect Reviewed

    D.E. Fujibayashi, M. Kato

    Physica C 雑誌 Elsevier   484   94 - 96   2013.01

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    Kind of work:Joint Work  

  • Vortex states in de facto mesoscopic Mo80Ge20 pentagon plates Reviewed

    Ho T. Huy, M. Kato, T. Ishida

    Superconductor Science and Technology IOP   26 ( 6 )   2013

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    Kind of work:Joint Work  

  • Dynamics of Vortices in Nano-Structured Superconductors with Periodic Arrays of Various Antidots Reviewed

    D.E. Fujibayashi, M. Kato

    Journal of Physics: Conference Series 雑誌 IOP Publishing   400 ( 2 )   022020.1 - 4   2012.12

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    Kind of work:Joint Work  

  • Microscopic Investigation of Vortex-Vortex Interaction in Conventional Superconductors Reviewed

    M. Kato, Y. Niwa

    Journal of Physics: Conference Series 雑誌 IOP Publishing   400 ( 2 )   022051.1 - 4   2012.12

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  • Quasi-particle structures around a pair of half-quantum vortices in chiral p-wave super conductors Reviewed

    Y Niwa, M. Kato, K. Maki

    Journal of Physics: Conference Series 雑誌 IOP Publishing   400 ( 2 )   022083.1 - 4   2012.12

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  • Vortex configuration and vortex–vortex interaction in nano-structured superconductors Reviewed

    M. Kato, Y. Niwa, H. Suematsu, T. Ishida

    Physica C 雑誌 Elsevier   479   106 - 110   2012.05

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  • VortexStates in Nano-Structured MgB2 Reviewed

    Y. Niwa, M. Kato

    Physics Procedia 雑誌 Elsevier   27   116 - 119   2012.05

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    Kind of work:Joint Work  

  • Eigenstates of the linearlized Ginzburg-Landau equation for mesoscopic multiply-connected superconductor Reviewed

    O. Sato, M. Kato

    Physica C 雑誌 Elsevier   471 ( 21-22 )   817 - 819   2011.11

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    Kind of work:Joint Work  

  • A new numerical method for quasi-particle spectroscopy around a pair of vortices in triplet superconductors Reviewed

    Y. Niwa, M. Kato, K. Maki

    J. Phys. Chem. Solids 雑誌 Elsevier   72 ( 5 )   392 - 394   2011.05

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    Kind of work:Joint Work  

  • Three-dimensional simulation of quasi-particle structures in nano-scaled superconductors Reviewed

    S. Oshima, M. Kato

    J. Phys. Chem. Solids 雑誌 Elsevier   72 ( 5 )   398 - 402   2011.05

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    Kind of work:Joint Work  

  • Magnetic flux structures in various shaped composite structures with d- and s-wave superconductors (d-dots) Reviewed

    M. Kato, T. Koyama, M. Machida, S. Kawamata, T. Ishida

    Journal of Physics: Conference Series 雑誌 IOP Publishing   248   2010.12

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    Kind of work:Joint Work  

  • Vortex molecule in a Nanoscopic Square Superconducting Plate Reviewed

    H. Suematsu, T. Ishida, T. Koyama, M. Machida, M. Kato

    Journal of Physical Society of Japan 雑誌 Physical Society of Japan   79 ( 12 )   2010.12

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    Kind of work:Joint Work  

  • Self-consistent solution for a single vortex in d-wave superconductors Reviewed

    M. Kato, K. Maki

    Europhys. Lett. 雑誌   Vol. 54   800 - 806   2001.12

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    Kind of work:Joint Work  

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Books and Other Publications

  • 超伝導磁束状態の物理

    池田隆介, 石田武和, 市岡 優典,伊豫 彰,宇治 進也,大井 修一, 大熊哲, 太田 幸宏, 岡安 悟 , 荻野拓, 掛谷 一弘, 笠原 裕一, 加藤 勝,門脇 和男, 川畑 史郎, 北 孝文, 北野 晴久, 熊倉 浩明, 小久保伸人, 小山 富男, 笹川 崇男, 芝内 孝禎, 高橋 博樹, 田中 康資, 田仲由喜夫, 為ヶ井 強, 永井 佑紀, 仲島 康行, 西尾太一郎, 西嵜 照和, 野島 勉,花栗 哲郎,平田 和人,胡 暁, 卞 舜生, 前田 京剛, 町田 昌彦, 宮川 和也, 村上 雅人, 柳澤 孝, 山本 明保, 山本 卓, 横山 毅人 ( Role: Joint author)

    裳華房  2017.04  ( ISBN:978-4-7853-2922-8

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    Responsible for pages:220-226  

  • Composite Structures of d-Wave and s-Wave Superconductors (d-dot): Analysis Using Two-Component Ginzburg-Landau Equations

    M. Kato, T. Ishida, T. Koyama, M. Machida ( Role: Joint author)

    INTECH  2012.12 

Presentations

  • 共晶ハイエントロピー合金NbScTiZr の磁束ピン止め特性 Domestic conference

    上田遥翔,西嵜照和,上田高佑,川崎佑太,末吉哲郎,関武留,北川二郎,加藤勝,野島勉,淡路智,佐々木孝彦

    2024年第71回応用物理学会春季学術講演会  2024.03  応用物理学会

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    Presentation type:Oral presentation (general)  

    Venue:東京  

  • 固有ジョセフソン接合における電圧状態へのシミュレーション Domestic conference

    加藤勝, 尾崎弘季

    日本物理学会2024年春季大会  2024.03  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • 柱状欠陥のある超伝導体中の渦糸の3次元分子動力学シミュレーション Domestic conference

    山下直斗, 加藤勝

    日本物理学会2024年春季大会  2024.03  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • 回転する磁場下での渦糸状態:ゲージ場への依存性 Domestic conference

    加藤勝

    日本物理学会2024年春季大会  2024.03  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • Phase Transition of Strange Vortex State in a Superconductor under a Rotated Magnetic Feld International conference

    M. Kato

    American Physical Society March Meeting   2024.03  American Physical Society

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    Presentation type:Oral presentation (general)  

    Venue:online  

  • 渦糸に対する3次元分子動力学法の拡張 Domestic conference

    加藤勝

    第29回 渦糸物理ワークショップ  2023.12  ボルテックスフォーラム

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    Presentation type:Oral presentation (general)  

    Venue:仙台  

  • ハイエントロピー合金の磁場中超伝導特性 ―超伝導ハイエントロピー合金のjcを高める方法― Domestic conference

    西嵜照和,川崎佑太,末吉哲郎,石津直樹,関武留,北川二郎,加藤勝,淡路智,野島勉,佐々木孝彦

    第29回 渦糸物理ワークショップ  2023.12  ボルテックスフォーラム

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    Presentation type:Oral presentation (general)  

    Venue:仙台  

  • Phase Dynamics of an Intrinsic Josephson Junction in a Cuprate High-Tc Superconductor International conference

    M. Kato

    Material Research Meeting 2023 (MRM2023/IUMRS-ICA2023)  2023.12  the International Union of Materials Research Societies (IUMRS)

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    Presentation type:Oral presentation (general)  

    Venue:Kyoto, Japan  

  • Phase Transition of Strange Vortex State in a Superconductor under a Helical Magnetic Field International conference

    M. Kato, H. Yokoji

    36th International Symposium on Superconductivity (ISS2023)  2023.11  The National Institute of Advanced Industrial Science and Technology (AIST) and Victoria University of Wellington (VUW)

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    Presentation type:Oral presentation (general)  

    Venue: Wellington, New Zealand  

  • ハイエントロピー合金(TaNb)0.7(ZrHfTi)0.3の微細組織構造と磁束ピン止め特性 Domestic conference

    西嵜照和, 川崎佑太, 末吉哲郎, 北川二郎, 石津直樹, 加藤勝, 淡路智, 野島勉, 佐々木孝彦

    日本物理学会第78回年次大会  2023.09  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:仙台  

  • Superconducting property in high-entropy alloy processed by high-pressure torsion Invited International conference

    T. Nishizaki, Y. Kawasaki, T. Sueyoshi, N. Ishizu, J. Kitagawa, Y. Tang, Z. Horita, M. Kato, S. Awaji, T. Nojima, T. Sasaki

    he International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS Processing, Fabrication, Properties, Applications (Themec2023)   2023.07  THERMEC committees

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    Presentation type:Oral presentation (invited, special)  

    Venue:Vienna., Austria  

  • Vortex dynamics: A molecular + field dynamics simulation Invited International conference

    M. Kato

    2nd International Meet on Condensed Matter Physics (CMPMEET2023)  2023.06  Albedo Meetings

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    Presentation type:Oral presentation (invited, special)  

    Venue:Paris (Francs) and online  

  • 粒子+場の分子動力学法を用いた渦糸のダイナミクスシミュレーション Domestic conference

    山中純, 加藤勝

    日本物理学会2023年春季大会  2023.03  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • 乱れた超伝導体中の超伝導状態の微視的シミュレーション Domestic conference

    加藤勝

    日本物理学会2023年春季大会  2023.03  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • Molecular + Field Dynamics (MFD) Simulation on Vortex dynamics in a Superconductor International conference

    Masaru Kato, Jun Yamanaka

    2023.03 

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    Presentation type:Oral presentation (general)  

  • 高圧ねじり加工されたハイエントロピー合Hf21Nb25Ti15V15Zr24の超伝導特性 Domestic conference

    西嵜照和, 川崎佑太, 末吉哲郎, 北川二郎, 石津直樹, 唐永鵬, 堀田善治, 加藤勝, 淡路智, 野島勉, 佐々木孝彦

    日本物理学会2023年春季大会  2023.03  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • 異方的超伝導体中の柱状欠陥による渦糸ピン留めの3次元分子動力学法によるシミュレーション Domestic conference

    加藤勝

    日本物理学会2023年春季大会  2023.03  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • 高温超伝導体固有ジョセフソン接合におけるテラヘルツ位相ダイナミクスの理論 Invited Domestic conference

    加藤勝, 和地崇政, 今井拓也

    2023年第70回応用物理学会春季学術講演会  2023.03  応用物理学会

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    Presentation type:Oral presentation (invited, special)  

    Venue:東京  

  • 分子+場の動力学法を用いた渦糸集団運動シミュレーション Domestic conference

    山中純, 加藤勝

    第28回 渦糸物理ワークショップ (VPWJ2022)  2022.12 

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    Presentation type:Oral presentation (invited, special)  

    Venue:相模原  

  • 超伝導体中の渦糸のピン留めの微視的シミュレーション Domestic conference

    加藤勝

    第28回 渦糸物理ワークショップ (VPWJ2022)  2022.12 

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    Presentation type:Oral presentation (general)  

    Venue:相模原  

  • 固有ジョセフソン接合における抵抗状態の発生のシミュレーション Domestic conference

    和地崇政, 加藤勝

    第28回 渦糸物理ワークショップ (VPWJ2022)  2022.12 

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    Presentation type:Poster presentation  

    Venue:相模原  

  • Effect of thermal fluctuation on voltage state in an intrinsic Josephson junction International conference

    Takamasa Wachi, Masaru Kato

    35th International Symposium on Superconductivity (ISS2022)  2022.11 

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    Presentation type:Oral presentation (general)  

    Venue:Nagoya +オンライン  

  • Simulation of Collective Motion of Vortices Using Molecular + Field Dynamics Method International conference

    Jun Yamanaka, Masaru Kato

    35th International Symposium on Superconductivity (ISS2022)  2022.11 

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    Presentation type:Oral presentation (general)  

    Venue:Nagoya +オンライン  

  • Vortex states under in a superconductor under a helical magnetic field International conference

    Masaru Kato

    35th International Symposium on Superconductivity (ISS2022)  2022.11 

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    Presentation type:Oral presentation (general)  

    Venue:Nagoya +オンライン  

  • 分子+場の動力学法を用いた渦糸の集団運動シミュレーション Domestic conference

    山中純, 加藤勝

    第 21 回低温工学・超伝導若手合同講演会  2022.11  低温工学・超伝導学会

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    Presentation type:Oral presentation (general)  

    Venue:大阪  

  • Eilenberger方程式を用いた渦糸構造のシミュレーション Domestic conference

    川端基暉, 加藤勝

    日本物理学会2022年秋季大会  2022.09  日本物理学会

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    Presentation type:Poster presentation  

    Venue:東京  

  • 3次元分子動力学法による渦糸ピニングのシミュレーション Domestic conference

    加藤勝

    日本物理学会2022年秋季大会  2022.09  日本物理学会

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    Presentation type:Poster presentation  

    Venue:東京  

  • 固有ジョセフソン接合における電圧状態への熱揺らぎの影響 Domestic conference

    和地崇政, 加藤勝

    日本物理学会2022年秋季大会  2022.09  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:東京  

  • 分子+場の動力学法を用いた渦糸の集団運動シミュレーションIII Domestic conference

    山中純, 加藤勝

    日本物理学会2022年秋季大会  2022.09  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:東京  

  • Simulation of Collective Motion of Vortices UsingMolecular + FieldDynamics Method International conference

    Jun Yamanaka, Masaru Kato

    29th International Conference on LOW TEMPERATURE PHYSICS (LT29)  2022.08  Organizing Committee for the LT29

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    Presentation type:Poster presentation  

    Venue:Sapporo  

  • Numerical simulation of vortex pinning using the Eilenberger equations International conference

    Motoki Kawabata and Masaru Kato

    29th International Conference on LOW TEMPERATURE PHYSICS (LT29)  2022.08  Organizing Committee for the LT29

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    Presentation type:Poster presentation  

    Venue:Sapporo  

  • Transition Temperature and Vortex Structure of a Nanosized Dirty Superconductor International conference

    Masaru Kato,Terukazu Nishizaki and Motoki Kawabata

    29th International Conference on LOW TEMPERATURE PHYSICS (LT29)  2022.08  Organizing Committee for the LT29

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    Presentation type:Poster presentation  

    Venue:Sapporo  

  • Simulation of switching to voltage state in an intrinsic Josephson junction International conference

    Takamasa Wachi and Masaru Kato

    29th International Conference on LOW TEMPERATURE PHYSICS (LT29)  2022.08  Organizing Committee for the LT29

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    Presentation type:Poster presentation  

    Venue:Sapporo  

  • 超伝導ハイエントロピー合金(TaNb)0.7(ZrHfTi)0.3の臨界電流特性 Domestic conference

    西嵜照和, 川崎佑太, 河野雄大, 末吉哲郎, 北川二郎, 石津直樹, 加藤勝, 野島勉, 淡路智, 佐々木孝彦

    日本物理学会第77回年次大会  2022.03  日本物理学会

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    Presentation type:Poster presentation  

  • 分子+場の動力学法を用いた渦糸の集団運動シミュレーションII Domestic conference

    山中純, 加藤勝

    日本物理学会第77回年次大会  2022.03  日本物理学会

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    Presentation type:Poster presentation  

  • Eilenberger方程式を用いた渦糸ピン留めのシミュレーション

    川端基暉, 加藤勝

    日本物理学会第77回年次大会  2022.03  日本物理学会

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    Presentation type:Poster presentation  

  • 固有ジョセフソン接合における電圧状態へのスイッチングのシミュレーションII Domestic conference

    和地崇政, 加藤勝

    日本物理学会第77回年次大会  2022.03  日本物理学会

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    Presentation type:Poster presentation  

  • 外部磁場下および外部電流下での第I種超伝導体における超伝導状態 Domestic conference

    水原祥天, 加藤智広, 加藤勝

    日本物理学会第77回年次大会  2022.03  日本物理学会

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    Presentation type:Poster presentation  

  • Three-Dimensional Molecular Dynamics Method for Vortex pinning by Columnar Defects International conference

    M. Kato

    34th International Symposium on Superconductivity (ISS2021)  2021.12 

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    Presentation type:Poster presentation  

  • Vortices under a spatially rotated field: Entanglement, cutting, and reconnection of vortices International conference

    M. Kato, H. Yokoji, S. Fukui

    Material Research Meeting 2021 (MRM2021)  2021.12 

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    Presentation type:Poster presentation  

  • Phenomenological Simulation On Intermediate States In A Type Ⅰ Superconducting Wire International conference

    Y. Mizuhara, M. Kato

    Material Research Meeting 2021 (MRM2021)  2021.12 

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  • Molecular Dynamics Simulation On Vortex Dynamics In A Dirty Superconductor: Ordered And Disordered Motions Of Vortices International conference

    T. Aoki, M. Kato

    Material Research Meeting 2021 (MRM2021)  2021.12 

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  • Simulation of switching to voltage state in an intrinsic Josephson junction International conference

    T. Wachi, M. Kato

    34th International Symposium on Superconductivity (ISS2021)  2021.12 

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    Presentation type:Poster presentation  

  • Simulation of Collective Motion of Vortex Using Molecular +Field Dynamics International conference

    J. Yamanaka, M. Kato

    34th International Symposium on Superconductivity (ISS2021)  2021.12 

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    Presentation type:Poster presentation  

  • 分子+場の動力学法を用いた渦糸の集団運動シミュレーション Domestic conference

    山中純, 加藤勝

    第6回超電導スクール  2021.11 

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    Presentation type:Poster presentation  

  • 固有ジョセフソン接合における電圧状態へのスイッチングのシミュレーション Domestic conference

    和地崇政, 加藤勝

    第6回超電導スクール  2021.11 

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    Presentation type:Poster presentation  

  • 第1種超伝導ワイヤーの中間状態の現象論的シミュレーション Domestic conference

    水原祥天, 加藤勝

    第20回低温工学・超伝導 若手合同講演会  2021.11  低温工学・超伝導学会

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  • 不純物ポテンシャル下での渦糸系の分子動力学シミュレーション Domestic conference

    青木 統五, 加藤 勝

    第20回低温工学・超伝導 若手合同講演会  2021.11  低温工学・超伝導学会

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  • 固有ジョセフソン接合における電圧状態へのスイッチングのシミュレーション Domestic conference

    和地崇政, 加藤勝

    日本物理学会2021年秋季大会  2021.09  日本物理学会

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  • 超伝導体中のナノ構造による渦糸ピン留めのシミュレーション Domestic conference

    加藤勝, 西嵜照和

    日本物理学会2021年秋季大会  2021.09  日本物理学会

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    Presentation type:Poster presentation  

  • 3次元分子動力学法による渦糸ピン留めのシミュレーション Domestic conference

    加藤勝

    日本物理学会2021年秋季大会  2021.09  日本物理学会

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    Presentation type:Poster presentation  

  • 分子+場の動力学法を用いた渦糸の集団運動シミュレーション Domestic conference

    山中純, 加藤勝

    日本物理学会2021年秋季大会  2021.09  日本物理学会

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  • ハイエントロピー合金Hf21Nb25Ti15V15Zr24の臨界電流密度と渦糸構造 Domestic conference

    西嵜照和, 北川二郎A, 石津直樹A, 末吉哲郎, 加藤勝B, 野島勉C, 淡路智C, 佐々木孝彦

    日本物理学会2021年秋季大会  2021.09  日本物理学会

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  • 不純物ポテンシャル下での渦糸系の分子動力学シミュレーションⅣ Domestic conference

    青木統五, 加藤勝

    日本物理学会2021年秋季大会  2021.09  日本物理学会

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  • Microscopic analysis of flux structure in a dirty superconductor International conference

    T. Tamai, T. Nishizaki, M. Kato

    15th European Conference on Applied Superconductivity   2021.09 

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  • Molecular Dynamics Simulation on Vortex Dynamics in a Dirty Superconductor International conference

    T. Aoki, M. Kato

    XXXII IUPAP Conference on Computational Physics  2021.09 

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  • Phenomenological simulation on intermediate states in a type-I superconducting wire International conference

    Y. Mizuhara, M. Kato

    XXXII IUPAP Conference on Computational Physics  2021.09 

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  • Molecular + Field Dynamics Method for Vortex Dynamics in a Superconductor International conference

    M. Kato, J. Yamanaka

    XXXII IUPAP Conference on Computational Physics  2021.09 

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  • 回転する磁場下での渦糸構造 Domestic conference

    加藤勝

    第1回「超伝導真空」領域推進研究会  2021.05 

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  • 第Ⅰ種超伝導ワイヤーにおける中間状態の現象論的シミュレーションⅢ Domestic conference

    水原祥天,加藤勝

    日本物理学会 第76回年次大会  2021.03 

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  • 不純物ポテンシャル下での渦糸系の分子動力学シミュレーションⅢ Domestic conference

    青木統五,加藤勝

    日本物理学会 第76回年次大会  2021.03 

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  • 渦糸ダイナミクスの解明を目指す新規分子動力学法の開発 Domestic conference

    加藤勝, 山中純, 吉田翔

    日本物理学会 第76回年次大会  2021.03 

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  • Vortex Structure in a Superconductor under a Rotating Field: Entanglement and Recombination International conference

    M. Kato, H. Yokoji

    American Physical Society (APS) March Meeting  2021.03 

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  • Simulation of synchronization phenomenon of THz oscillation in intrinsic Josephson junctions International conference

    Y. Fujiki, M. Kato

    33rd International Symposium on Superconductivity  2020.12 

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  • Local Density of States of Quasi-particles around a Vortex Trapped in a Grain Boundary International conference

    T. Tamai, T. Nishizaki, M. Kato

    33rd International Symposium on Superconductivity  2020.12 

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  • Entanglement of vortices in a superconductor under spatially varying fields International conference

    H. Yokoji, M. Kato

    33rd International Symposium on Superconductivity  2020.12 

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  • Superconductivity in Nanosized Dirty Superconductors International conference

    M. Kato, T. Tamai, M. Umeda

    33rd International Symposium on Superconductivity  2020.12 

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  • Superconductivity in Nano-Size Invited International conference

    M. Kato

    Advanced Materials Lecture Series 2020  2020.10  International Association of Advanced Materials

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  • 空間変化する磁場下での超伝導体中の渦糸のエンタングルメント Domestic conference

    横地勇人, 加藤勝

    日本物理学会2020年秋季大会  2020.09 

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  • 固有Josephson接合におけるTHz発振の同期現象のシミュレーション Domestic conference

    藤木勇輔, 加藤勝

    日本物理学会2020年秋季大会  2020.09 

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  • 結晶粒界中での渦糸構造 Domestic conference

    玉井孝幸, 西嵜照和, 加藤勝

    日本物理学会2020年秋季大会  2020.09 

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  • メゾスコピック超伝導体の超伝導転移温度と電子対局在III Domestic conference

    加藤勝, 玉井孝幸

    日本物理学会2020年秋季大会  2020.09 

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  • 第1種超伝導ワイヤーにおける中間状態の現象論的シミュレーションⅡ Domestic conference

    水原祥天, 加藤勝

    日本物理学会2020年秋季大会  2020.09 

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    Presentation type:Poster presentation  

  • 不純物ポテンシャル下での渦糸系の分子動力学シミュレーションII:交流駆動力への応答 Domestic conference

    青木統五, 加藤勝

    日本物理学会2020年秋季大会  2020.09 

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    Presentation type:Poster presentation  

  • 第1種超伝導ワイヤーにおける中間状態の現象論的シミュレーション Domestic conference

    水原祥天, 加藤勝

    日本物理学会 第75回年次大会  2020.03 

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Charge of on-campus class subject

  • 量子場の理論

    2022   Weekly class   Graduate school

  • 量子力学IIA

    2022   Weekly class   Undergraduate

  • 物理学演習

    2022   Weekly class   Undergraduate

  • 基礎力学B2/必:工〈航空・海洋〉

    2022   Weekly class   Undergraduate

  • 工学研究の最先端

    2021    

  • 工学研究の最先端

    2021    

  • General Physics AII

    2021    

  • Exercises in General Physics

    2021    

  • Quantum Mechanics IIA

    2021    

  • Advanced Quantum Field Theory

    2021    

  • General Physics AII

    2021    

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Social Activities

  • 日本物理学会領域6学生優秀賞審査委員

    2021.09

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    日本物理学会の領域6の学生優秀賞の審査委員として、学生の講演を見て、審査を行った。

  • 日本物理学会領域6学生優秀賞審査委員

    2021.03

  • 日本物理学会領域6学生優秀賞審査委員

    2020.09

  • 日本物理学会領域6学生優秀賞審査委員

    2020.03

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    日本物理学会の領域6の学生優秀賞の審査委員として、学生の講演(ポスター発表)を見て、審査を行った。

  • 日本物理学会領域6学生優秀賞審査委員

    2019.09

  • 日本物理学会領域6学生優秀賞審査委員

    2019.03

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    日本

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Visiting Lectures ⇒ Link to the list of Visiting Lectures

  • 超伝導入門

    Category:Engineering (machinery, electronics / physics, electrical / electronics, electrical information, chemical biotechnology, architecture, cities (civil engineering / environment), material chemistry, aerospace, marine systems, applied chemistry, chemistry, materials)

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    Audience:High school students, College students, Teachers, Researchers, General, Company, Civic organization

    Keyword:超伝導、省エネルギー 

    超伝導体、特にナノ構造超伝導体の最先端の研究を紹介する。