Researcher Profiles - Hariki Atsushi

写真a

Hariki Atsushi

Organization

Graduate School of Engineering Division of Physics and Electronics Associate Professor
School of Engineering Department of Physics and Electronics

Affiliation

Institute of Engineering

Homepage

https://sites.google.com/view/hariki/home

Position

Graduate School of Engineering Division of Physics and Electronics

Associate Professor 2023.04 - Now
Graduate School of Engineering Division of Physics and Electronics

Assistant Professor 2022.04 - 2023.03
School of Engineering Department of Physics and Electronics

Associate Professor 2023.04 - Now
School of Engineering Department of Physics and Electronics

Assistant Professor 2022.04 - 2023.03

Degree

博士（工学）（ Osaka Prefecture University ）
修士（工学）（ Osaka Prefecture University ）
学士（工学）（ Osaka Prefecture University ）

Research Areas

Natural Science / Magnetism, superconductivity and strongly correlated systems
Natural Science / Semiconductors, optical properties of condensed matter and atomic physics
Nanotechnology/Materials / Optical engineering and photon science

Research Interests

強相関電子系、遷移金属酸化物、希土類化合物、ペロブスカイト化合物
第一原理計算、量子多体計算、超伝導、磁性、巨大磁気抵抗、金属絶縁体転移、X線光電子分光、X線吸収分光、X線発光分光

Professional Memberships

日本物理学会

2021.01 - Now Domestic

Job Career (off-campus)

Osaka Prefecture University

2020.04 - Now
TU Wien Institute of Solid State Physics

2016.11 - 2020.03
Czech Academy of Sciences

2016.02 - 2016.10

Papers

X-ray magnetic circular dichroism in RuO2 Reviewed International coauthorship

A. Hariki, Y. Takahashi, J. Kuneš

Physical Review B 2024.03

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Publishing type：Research paper (scientific journal)

DOI： 10.1103/PhysRevB.109.094413
Hidden covalent insulator and spin excitations in SrRu2O6 Reviewed International coauthorship

Diana Csontosová, Jiří Chaloupka, Hiroshi Shinaoka, Atsushi Hariki, Jan Kuneš

Physical Review B 108 ( 19 ) 2023.11（ ISSN:24699950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/PhysRevB.108.195137
Modulation-doping a correlated electron insulator. Reviewed International coauthorship

Mondal D, Mahapatra SR, Derrico AM, Rai RK, Paudel JR, Schlueter C, Gloskovskii A, Banerjee R, Hariki A, DeGroot FMF, Sarma DD, Narayan A, Nukala P, Gray AX, Aetukuri NPB

Nature communications 14 ( 1 ) 6210 2023.10

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DOI： 10.1038/s41467-023-41816-3

PubMed
Observation of temperature-dependent Fermi surface evolution at the valence transition of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>YbInCu</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math> Reviewed

Hiroaki Anzai, Atsushi Hariki, Hitoshi Sato, Masashi Arita, Tao Zhuang, Koichi Hiraoka

Physical Review B 108 ( 7 ) 2023.08（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal)

DOI： 10.1103/physrevb.108.075116

Other URL： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.108.075116/fulltext
Electronic structure of ACu3Co4 O12 (A = Y, La, Bi): Synthesis, characterization, core-level spectroscopies, high-pressure application, and ab initio calculation Reviewed International coauthorship

Yuta Kato, Meng Jie Huang, Keito Kasebayashi, Takateru Kawakami, Tatsuya Yamaguchi, Jens Buck, Ru Pan Wang, Matthias Kalläne, Kai Rossnagel, Peter Nagel, Stefan Schuppler, Yoshihiro Takahashi, Takao Odake, Shogo Kawaguchi, Ikuya Yamada, Atsushi Hariki

Physical Review Materials 7 ( 7 ) 2023.07（ ISSN:2475-9953 ）

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Authorship：Last author,　Corresponding author Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

We present a comprehensive experimental and computational study on A-site ordered perovskite oxides YCu3Co4O12, LaCu3Co4O12, and BiCu3Co4O12 including synthesis, transport, and magnetic characterization, high-pressure application, K- and L-edge x-ray absorption spectroscopy (XAS), Co 2p core-level x-ray photoemission spectroscopy and density-functional theory (DFT) calculations combined with dynamical mean-field theory (DMFT) and +U scheme. An insulating behavior with a valence state of A(3+) Cu-3(similar to 3+) Co-4(similar to 3+) O-12(2-) is found for the three compounds at ambient and high-pressure conditions (up to similar to 55 GPa). A DFT calculation for YCu3Co4O12 uncovers the energetics of the Cu-O and Co-O bonding formation and crystal-field splitting, leading to a narrow-gap electronic structure with a hybrid orbital and element character near the Fermi energy. The stable low-spin configuration of the Co ion is studied in comparison to a canonical perovskite cobaltite LaCoO3. A DFT+ DMFT analysis of the Cu spin-correlation function indicates that the Zhang-Rice singlet description for the CuO4 plaquette is valid, while a hybridization with the Co 3d orbitals also contributes to the Cu spin screening. The presence of the hybridization between the Co and Cu orbitals is shown by the DFT + DMFT analysis for the Co L-2,L-3 XAS experimental spectra that exhibit unusual broad line shape. An increasing behavior of electrical resistance at elevated pressures is observed in all compounds and is interpreted based on a DFT + U simulation.

DOI： 10.1103/PhysRevMaterials.7.073401
Single- and Multimagnon Dynamics in Antiferromagnetic α−Fe2O3 Thin Films Reviewed International coauthorship

Jiemin Li, Yanhong Gu, Yoshihiro Takahashi, Keisuke Higashi, Taehun Kim, Yang Cheng, Fengyuan Yang, Jan Kuneš, Jonathan Pelliciari, Atsushi Hariki, Valentina Bisogni

Physical Review X 13 ( 1 ) 2023.02

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/PhysRevX.13.011012
High-Pressure Synthesis of a Novel Quadruple Perovskite Oxide AgCu3Cr4O12 Reviewed

Kato Yuta, Furo Mizuki, Yamaguchi Tatsuya, Hariki Atsushi, Yamada Ikuya

Materials Transactions 64 ( 9 ) 2088 - 2092 2023（ ISSN:13459678 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

A novel complex transition metal oxide AgCu3Cr4O12 has been obtained using high-pressure and high-temperature conditions of 12 GPa and 1223 K. The crystal structure is refined to be a cubic AA'3B4O12-type quadruple perovskite structure based on the Rietveld refinement of the synchrotron X-ray powder diffraction data. The density-functional theory calculation obtains a metallic band structure. The valence state is estimated to be Ag~1.3+Cu~2.2+3Cr4+4O12 by bond valence sum and X-ray absorption spectroscopy analyses. The valence state on ACu3Cr4O12 series (A = Ag, Ca, La, Ce) sequentially transforms from Ag~1.3+Cu~2.2+3Cr4+4O12, Ca2+Cu2+3Cr4+4O12, La3+Cu(2+δ)+3Cr(3.75–0.75δ)+4O12, to Ce4+Cu2+3Cr3.5+4O12, where the electrons are doped into the A'-site (Cu~2.2+ → Cu2+), followed by predominant doping into the B-site (Cr4+ → Cr(3.75–0.75δ)+ → Cr3.5+). Their electron doping sequence is distinguished from those reported in other quadruple perovskite oxides, proposing characteristic features of the ACu3Cr4O12 family.

DOI： 10.2320/matertrans.mt-mg2022016
Kondo quasiparticle dynamics observed by resonant inelastic x-ray scattering Reviewed International coauthorship

M. C. Rahn, K. Kummer, A. Hariki, K. H. Ahn, J. Kuneš, A. Amorese, J. D. Denlinger, D. H. Lu, M. Hashimoto, E. Rienks, M. Valvidares, F. Haslbeck, D. D. Byler, K. J. McClellan, E. D. Bauer, J. X. Zhu, C. H. Booth, A. D. Christianson, J. M. Lawrence, F. Ronning, M. Janoschek

Nature Communications 13 ( 1 ) 2022.12

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Publishing type：Research paper (scientific journal)

Effective models focused on pertinent low-energy degrees of freedom have substantially contributed to our qualitative understanding of quantum materials. An iconic example, the Kondo model, was key to demonstrating that the rich phase diagrams of correlated metals originate from the interplay of localized and itinerant electrons. Modern electronic structure calculations suggest that to achieve quantitative material-specific models, accurate consideration of the crystal field and spin-orbit interactions is imperative. This poses the question of how local high-energy degrees of freedom become incorporated into a collective electronic state. Here, we use resonant inelastic x-ray scattering (RIXS) on CePd3 to clarify the fate of all relevant energy scales. We find that even spin-orbit excited states acquire pronounced momentum-dependence at low temperature—the telltale sign of hybridization with the underlying metallic state. Our results demonstrate how localized electronic degrees of freedom endow correlated metals with new properties, which is critical for a microscopic understanding of superconducting, electronic nematic, and topological states.

DOI： 10.1038/s41467-022-33468-6

PubMed
Satellites in the Ti 1s core level spectra of SrTiO3 and TiO2 Reviewed International coauthorship

Atsushi Hariki, Keisuke Higashi, Tatsuya Yamaguchi, Jiebin Li, Curran Kalha, Manfred Mascheck, Susanna K. Eriksson, Tomas Wiell, Frank M. F. de Groot, Anna Regoutz

Physical Review B 106 ( 20 ) 2022.11（ ISSN:24699950 ）

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

DOI： 10.1103/PhysRevB.106.205138

Other URL： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.106.205138/fulltext
Charge-transfer effect in Fe 2p core-level x-ray photoemission spectra of trivalent Fe oxides: LDA+DMFT study. Reviewed

Higashi K, Yamaguchi T, Takahashi Y, Hariki A

Journal of physics: Condensed matter 2022.07（ ISSN:0953-8984 ）

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Authorship：Last author,　Corresponding author Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1088/1361-648X/ac7f18

PubMed
Analyzing the Local Electronic Structure of Co3O4 Using 2p3d Resonant Inelastic X-ray Scattering. Reviewed International coauthorship

Wang RP, Huang MJ, Hariki A, Okamoto J, Huang HY, Singh A, Huang DJ, Nagel P, Schuppler S, Haarman T, Liu B, de Groot FMF

The journal of physical chemistry C 126 ( 20 ) 8752 - 8759 2022.05（ ISSN:1932-7447 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1021/acs.jpcc.2c01521

PubMed
CaCu3Ru4O12 : A High-Kondo-Temperature Transition-Metal Oxide Reviewed International coauthorship

D. Takegami, C.-Y. Kuo, K. Kasebayashi, J.-G. Kim, C. F. Chang, C. E. Liu, C. N. Wu, D. Kasinathan, S. G. Altendorf, K. Hoefer, F. Meneghin, A. Marino, Y. F. Liao, K. D. Tsuei, C. T. Chen, K.-T. Ko, A. Günther, S. G. Ebbinghaus, J. W. Seo, D. H. Lee, G. Ryu, A. C. Komarek, S. Sugano, Y. Shimakawa, A. Tanaka, T. Mizokawa, J. Kuneš, L. H. Tjeng, A. Hariki

Physical Review X 12 ( 1 ) 2022.01（ ISSN:2160-3308 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/physrevx.12.011017
Valence skipping, internal doping, and site-selective Mott transition in PbCoO3 under pressure Reviewed International coauthorship

Atsushi Hariki, Kyo-Hoon Ahn, Jan Kunes

PHYSICAL REVIEW B 104 ( 23 ) 2021.12（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

We present a computational study of PbCoO3 at ambient and elevated pressure. We employ the static and dynamic treatment of local correlation in the form of density functional theory + U (DFT+U) and + dynamical mean-field theory (DFT+DMFT). Our results capture the experimentally observed crystal structures and identify the unsaturated Pb 6s - O 2p bonds as the driving force beyond the complex physics of PbCoO3. We provide a geometrical analysis of the structural distortions and we discuss their implications, in particular the internal doping, which triggers a transition between phases with and without local moments and a site-selective Mott transition in the low-pressure phase.

DOI： 10.1103/PhysRevB.104.235101
Core-Level X-Ray Spectroscopy of Infinite-Layer Nickelate: LDA+DMFT Study Reviewed International coauthorship

Keisuke Higashi, Mathias Winder, Jan Kuneš, Atsushi Hariki

Physical Review X 11 ( 4 ) 2021.10

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/PhysRevX.11.041009
2p x-ray absorption spectroscopy of 3d transition metal systems Reviewed International coauthorship

F. M. F. de Groot, H. Elnaggar, F. Frati, R.-P. Wang, M. U. Delgado-Jaime, M. van Veenendaal, J. Fernandez-Rodriguez, R. Green, G. van der Laan, Y. Kvashnin, A. Hariki, H. Ikeno, H. Ramanantoanina, C. Daul, B. Delley, M. Odelius, M. Lundberg, O. Kuhn, S. Bokarev, E. Shirley, J. Vinson, K. Gilmore, M. Stener, G. Fronzoni, P. Decleva, P. Kruger, M. Retegan, Y. Joly, C. Vorwerk, C. Draxl, J. Rehr, A. Tanaka

Journal of Electron Spectroscopy and Related Phenomena 249 2021.05

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Publishing type：Research paper (scientific journal) Kind of work：Joint Work International / domestic magazine：International journal
Hard x-ray photoemission study on strain effect in LaNiO3 thin films Reviewed

K. Yamagami, K. Ikeda, A. Hariki, Y. Zhang, A. Yasui, Y. Takagi, Y. Hotta, T. Katase, T. Kamiya, H. Wadati

Applied Physics Letters 118 ( 16 ) 161601 - 161601 2021.04（ ISSN:0003-6951 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1063/5.0044047
Electronic and crystal structures of LnFeAsO1-xHx (Ln= La, Sm) studied by x-ray absorption spectroscopy, x-ray emission spectroscopy, and x-ray diffraction (part I: carrier-doping dependence). Reviewed

Yoshiya Yamamoto, Hitoshi Yamaoka, Takayuki Uozumi, Atsushi Hariki, Seiichiro Onari, Jun-ichi Yamaura, Kenji Ishii, Takuma Kawai, Masahiro Yoshida, Munetaka Taguchi, Kensuke Kobayashi, Jung-Fu Lin, Nozomu Hiraoka, Hirofumi Ishii, K D Tsuei, Hiroshi Okanishi, Soshi Iimura, Satoru Matsuishi, Hideo Hosono, Jun'ichiro Mizuki

Journal of Physics: Condensed Matter 33 ( 25 ) 2021.04（ ISSN:0953-8984 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

A carrier doping by a hydrogen substitution in LaFeAsO1-x H x is known to cause two superconducting (SC) domes with the magnetic order at both end sides of the doping. In contrast, SmFeAsO1-x H x has a similar phase diagram but shows single SC dome. Here, we investigated the electronic and crystal structures for iron oxynitride LnFeAsO1-x H x (Ln = La, Sm) with the range of x = 0-0.5 by using x-ray absorption spectroscopy, x-ray emission spectroscopy, and x-ray diffraction. For both compounds, we observed that the pre-edge peaks of x-ray absorption spectra near the Fe-K edge were reduced in intensity on doping. The character arises from the weaker As-Fe hybridization with the longer As-Fe distance in the higher doped region. We can reproduce the spectra near the Fe-K edge according to the Anderson impurity model with realistic valence structures using the local-density approximation (LDA) plus dynamical mean-field theory (DMFT). For Ln = Sm, the integrated-absolute difference (IAD) analysis from x-ray Fe-Kβ emission spectra increases significantly. This is attributed to the enhancement of magnetic moment of Fe 3d electrons stemming from the localized picture in the higher doped region. A theoretical simulation implementing the self-consistent vertex-correction method reveals that the single dome superconducting phase for Ln = Sm arises from a better nesting condition in comparison with Ln = La.

DOI： 10.1088/1361-648x/abf9b9

PubMed
Electronic and crystal structures of LnFeAsO1-xHx (Ln= La, Sm) studied by x-ray absorption spectroscopy, x-ray emission spectroscopy, and x-ray diffraction: II pressure dependence. Reviewed

Yoshiya Yamamoto, Hitoshi Yamaoka, Takuma Kawai, Masahiro Yoshida, Jun-ichi Yamaura, Kenji Ishii, Seiichiro Onari, Takayuki Uozumi, Atsushi Hariki, Munetaka Taguchi, Kensuke Kobayashi, Jung-Fu Lin, Nozomu Hiraoka, Hirofumi Ishii, K D Tsuei, Hiroshi Okanishi, Soshi Iimura, Satoru Matsuishi, Hideo Hosono, Jun'ichiro Mizuki

Journal of Physics: Condensed Matter 33 ( 25 ) 2021.04（ ISSN:0953-8984 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

We examine electronic and crystal structures of iron-based superconductors LnFeAsO1-x H x (Ln = La, Sm) under pressure by means of x-ray absorption spectroscopy (XAS), x-ray emission spectroscopy (XES), and x-ray diffraction. In LaFeAsO the pre-edge peak on high-resolution XAS at the Fe-K absorption edge gains in intensity on the application of pressure up to 5.7 GPa and it saturates in the higher pressure region. We found integrated-absolute difference values on XES for Ln = La, corresponding to a spin state, decline on the application of pressure, and then it is minimized when the T c approaches the maximum at around 5 GPa. In contrast, such the optimum value was not detected for Ln = Sm. We reveal that the superconductivity is closely related to the lower spin state for Ln = La unlike Sm case. We observed that As height from the Fe basal plane and As-Fe-As angle on the FeAs4 tetrahedron for Ln = La deviate from the optimum values of the regular tetrahedron in superconducting (SC) phase, which has been widely accepted structural guide to SC thus far. In contrast, the structural parameters were held near the optimum values up to ∼15 GPa for Ln = Sm.

DOI： 10.1088/1361-648x/abfaf4

PubMed
Metamagnetic Behavior in a Quadruple Perovskite Oxide Reviewed

Yuichi Okazaki, Yuta Kato, Yuta Kizawa, Seiji Oda, Kai Uemura, Takuya Nishio, Fuminari Fujii, Shintaro Fujinari, Masaya Kinoshita, Takao Odake, Hayato Togano, Takashi Kamegawa, Shogo Kawaguchi, Hajime Yamamoto, Hidekazu Ikeno, Shunsuke Yagi, Kouhei Wada, Kyo-Hoon Ahn, Atsushi Hariki, Ikuya Yamada

Inorganic Chemistry 60 ( 10 ) 7023 - 7030 2021.04（ ISSN:0020-1669 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

A cubic quadruple perovskite oxide CeMn3Cr4O12 has been synthesized under high-pressure and high-temperature conditions of 8 GPa and 1273 K. The X-ray absorption spectroscopy reveals that the Ce ions are in a trivalent state, as represented by the ionic model of Ce3+Mn3+3Cr3+4O12. The magnetic study demonstrates three independent antiferromagnetic transitions attributed to Ce (∼10 K), Mn (46 K), and Cr (133 K) ions. Furthermore, a magnetic field-induced antiferromagnetic-to-ferromagnetic (metamagnetic) transition of Ce3+ 4f moments is observed at low temperatures below 20 K, exhibiting a rare example of metamagnetism in the Ce3+-oxides. This finding represents that the 3d-electron magnetic sublattices play a role in the metamagnetism of 4f-electron magnetic moments, demonstrating a new aspect of the 3d-4f complex electron systems.

DOI： 10.1021/acs.inorgchem.0c03432

PubMed
X-ray spectroscopy of the rare-earth nickelate LuNiO3 : LDA+DMFT study Reviewed International coauthorship

Mathias Winder, Atsushi Hariki, Jan Kuneš

Physical Review B 102 ( 8 ) 2020.08（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/PhysRevB.102.085155
Damping of spinful excitons in LaCoO3 by thermal fluctuations: Theory and experiment Reviewed International coauthorship

Atsushi Hariki, Ru-Pan Wang, Andrii Sotnikov, Keisuke Tomiyasu, Davide Betto, Nicholas B. Brookes, Yohei Uemura, Mahnaz Ghiasi, Frank M. F. de Groot, Jan Kuneš

Physical Review B 101 ( 24 ) 2020.06（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/PhysRevB.101.245162
A Sequential Electron Doping for Quadruple Perovskite Oxides ACu3Co4O12 (A = Ca, Y, Ce). Reviewed

Ikuya Yamada, Takao Odake, Atsushi Tanaka, Yuichi Okazaki, Fumito Toda, Yuta Ishii, Toshifumi Taniguchi, Shogo Kawaguchi, Atsushi Hariki

Inorganic Chemistry 59 ( 13 ) 8699 - 8706 2020.06（ ISSN:0020-1669 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

A novel quadruple perovskite oxide CeCu3Co4O12 has been synthesized in high-pressure and high-temperature conditions of 12 GPa and 1273 K. Rietveld refinement of the synchrotron X-ray powder diffraction pattern reveals that this oxide crystallizes in a cubic quadruple perovskite structure with the 1:3-type ordering of Ce and Cu ions at the A-site. X-ray absorption spectroscopy analysis demonstrates the valence-state transitions in the ACu3Co4O12 series (A = Ca, Y, Ce) from Ca2+Cu3+3Co3.25+4O12 to Y3+Cu3+3Co3+4O12 to Ce4+Cu2.67+3Co3+4O12, where the electrons are doped in the order from B-site (Co3.25+ → Co3+) to A′-site (Cu3+ → Cu2.67+). This electron-doping sequence is in stark contrast to the typical B-site electron doping for simple ABO3-type perovskite and quadruple perovskites CaCu3B4O12 (B = V, Cr, Mn), further differing from the monotonical A′-site electron doping for Na1-xLaxMn3Ti4O12 and A′- and B-site electron doping for AMn3V4O12 (A = Na, Ca, La). The differences in the electron-doping sequences are interpreted by rigid-band models, proposing a wide variety of electronic states for the complex transition-metal oxides containing the multiple valence-variable ions.

DOI： 10.1021/acs.inorgchem.0c00184

PubMed
LDA+DMFTapproach to resonant inelastic x-ray scattering in correlated materials Reviewed International coauthorship

Atsushi Hariki, Mathias Winder, Takayuki Uozumi, Jan Kuneš

Physical Review B 101 ( 11 ) 2020.03（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/PhysRevB.101.115130
Charge-transfer effect in hard x-ray 1s and 2p photoemission spectra: LDA+DMFT and cluster-model analysis Reviewed International coauthorship

Mahnaz Ghiasi, Atsushi Hariki, Mathias Winder, Jan Kuneš, Anna Regoutz, Tien-Lin Lee, Yongfeng Hu, Jean-Pascal Rueff, Frank M. F. de Groot

Physical Review B 100 ( 7 ) 2019.08（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/physrevb.100.075146
Antiferromagnetism in RuO2 as d-wave Pomeranchuk instability Reviewed International coauthorship

Kyo-Hoon Ahn, Atsushi Hariki, Kwan-Woo Lee, Jan Kuneš

Physical Review B 99 ( 18 ) 2019.05（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/physrevb.99.184432
Pressure-induced spin-state ordering in Sr2CoO3F Reviewed International coauthorship

Juan Fernández Afonso, Andrii Sotnikov, Atsushi Hariki, Jan Kuneš

Physical Review B 99 ( 20 ) 2019.05（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/physrevb.99.205118
Collective Modes in Excitonic Magnets: Dynamical Mean-Field Study Reviewed International coauthorship

D. Geffroy, J. Kaufmann, A. Hariki, P. Gunacker, A. Hausoel, J. Kuneš

Physical Review Letters 122 ( 12 ) 2019.03（ ISSN:0031-9007 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/physrevlett.122.127601
Continuum Charge Excitations in High-Valence Transition-Metal Oxides Revealed by Resonant Inelastic X-Ray Scattering Reviewed International coauthorship

Atsushi Hariki, Mathias Winder, Jan Kuneš

Physical Review Letters 121 ( 12 ) 2018.09（ ISSN:0031-9007 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/physrevlett.121.126403
Redox behavior of solid solutions in the SrFe1-xCuxO3-δ system for application in thermochemical oxygen storage and air separation Reviewed International coauthorship

Josua Vieten, Brendan Bulfin, David E. Starr, Atsushi Hariki, Frank M. F. de Groot, Anahita Azarpira, Carolin Zachäus, Michael Hävecker, Katarzyna Skorupska, Nicole Knoblauch, Martin Schmücker, Martin Roeb, Christian Sattler

Energy Technology 2018.07（ ISSN:2194-4288 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1002/ente.201800554
Excitonic dispersion of the intermediate spin state in LaCoO3 revealed by resonant inelastic x-ray scattering Reviewed International coauthorship

Ru-Pan Wang, Atsushi Hariki, Andrii Sotnikov, Federica Frati, Jun Okamoto, Hsiao-Yu Huang, Amol Singh, Di-Jing Huang, Keisuke Tomiyasu, Chao-Hung Du, Jan Kuneš, Frank M. F. de Groot

Physical Review B 98 ( 3 ) 2018.07（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/physrevb.98.035149
Excitonic magnet in external field: Complex order parameter and spin currents Reviewed International coauthorship

D. Geffroy, A. Hariki, J. Kuneš

Physical Review B 97 ( 15 ) 2018.04（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/physrevb.97.155114
DFT+DMFT study on soft moment magnetism and covalent bonding in SrRu2O6 Reviewed International coauthorship

Atsushi Hariki, Andreas Hausoel, Giorgio Sangiovanni, Jan Kuneš

Physical Review B 96 ( 15 ) 2017.10（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/physrevb.96.155135
LDA+DMFT approach to core-level spectroscopy: Application to 3d transition metal compounds Reviewed International coauthorship

Atsushi Hariki, Takayuki Uozumi, Jan Kuneš

Physical Review B 96 ( 4 ) 2017.07（ ISSN:2469-9950 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1103/physrevb.96.045111
Orbital- and spin-order sensitive nonlocal screening in Mn 2p X-ray photoemission of La1−xSrxMnO3 Reviewed

A. Hariki, A. Yamanaka, T. Uozumi

EPL (Europhysics Letters) 114 ( 2 ) 27003 - 27003 2016.04（ ISSN:0295-5075 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.1209/0295-5075/114/27003
Theory of Spin-State Selective Nonlocal Screening in Co 2pX-ray Photoemission Spectrum of LaCoO3 Reviewed

Atsushi Hariki, Akihiro Yamanaka, Takayuki Uozumi

Journal of the Physical Society of Japan 84 ( 7 ) 073706 - 073706 2015.07（ ISSN:0031-9015 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.7566/jpsj.84.073706
High-Pressure Synthesis, Crystal Structure, and Unusual Valence State of Novel Perovskite Oxide CaCu3Rh4O12 Reviewed

Ikuya Yamada, Mikiko Ochi, Masaichiro Mizumaki, Atsushi Hariki, Takayuki Uozumi, Ryoji Takahashi, Tetsuo Irifune

Inorganic Chemistry 53 ( 14 ) 7089 - 7091 2014.07（ ISSN:0020-1669 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

A novel perovskite oxide, CaCu3Rh4O12, has been synthesized under high-pressure and high-temperature conditions (15 GPa and 1273 K). Rietveld refinement of synchrotron X-ray powder diffraction data indicates that this compound crystallizes in a cubic AA'3B4O12-type perovskite structure. Synchrotron X-ray absorption and photoemission spectroscopy measurements reveal that the Cu and Rh valences are nearly trivalent. The spectroscopic analysis based on calculations suggests that the appropriate ionic model of this compound is Ca(2+)Cu(∼2.8+)3Rh(∼3.4+)4O12, as opposed to the conventional Ca(2+)Cu(2+)3Rh(4+)4O12. The uncommon valence state of this compound is attributed to the relative energy levels of the Cu 3d and Rh 4d orbitals, in which the large crystal-field splitting energy of the Rh 4d orbitals is substantial.

DOI： 10.1021/ic501341x

PubMed
Dynamical Mean-Field Approach to Ni 2pX-ray Photoemission Spectra of NiO: A Role of Antiferromagnetic Ordering Reviewed

Atsushi Hariki, Yoshiyuki Ichinozuka, Takayuki Uozumi

Journal of the Physical Society of Japan 82 ( 4 ) 043710 - 043710 2013.04（ ISSN:0031-9015 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.7566/jpsj.82.043710
Core-Level Photoemission Study for Undoped Cuprates with a Dynamical Mean-Field Approach Considering Realistic Crystal Structure Reviewed

Atsushi Hariki, Yoshiyuki Ichinozuka, Takayuki Uozumi

Journal of the Physical Society of Japan 82 ( 2 ) 023709 - 023709 2013.02（ ISSN:0031-9015 ）

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Publishing type：Research paper (scientific journal) International / domestic magazine：International journal

DOI： 10.7566/jpsj.82.023709

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MISC

Metal-insulator transition in CaCu$_3$Fe$_4$O$_{12}$

Atsushi Hariki

2019.09

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We study structurally-triggered metal-insulator transition in CaCu$_3$Fe$_4$O$_{12}$ by means of local density approximation (LDA) +$U$ and LDA+dynamical mean-field theory (DMFT). The ferrimagnetic insulating phase is essentially the same within both approaches. While LDA+$U$ describes the metal-insulator transition as a Peierls-like instability driven by Fermi surface nesting in the magnetically ordered phase, LDA+DMFT allows also the site-selective Mott transition without magnetic ordering as well as smooth crossover between the two pictures. We point out similarities and differences to rare-earth nickelates.

Other URL： http://arxiv.org/pdf/1909.12126v1

Presentations

X-ray spectroscpies in altermagnetic α-MnTe International conference

Atsushi Hariki

Trends in the Theory of Quantum Materials 2023 2023.10

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Presentation type：Oral presentation (general)
DFT+DMFT study on x-ray magnetic circular dichroism in altermagnetic α-MnTe International coauthorship International conference

A. Hariki, T. Yamaguchi, D. Kriegner, K. W. Edmonds, P. Wadley, S. S. Dhesi, G. Springholz, L. Smejcal, K. Výborný, T. Jungwirth, J. Kunes

Computational Approaches to Quantum Many-Body Systems 2023.10

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Presentation type：Poster presentation
DFT+U and DFT+DMFT study on structural and metal-insulator transition in charge-disproportionated perovskite oxide PbCrO3 International coauthorship International conference

M. Furo, K.-H. Ahn, T. Yamaguchi, J. Kunes, A. Hariki

Computational Approaches to Quantum Many-Body Systems 2023.10

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Presentation type：Poster presentation
LDA+DMFT approach to core-level x-ray photoemission spectroscopy in correlated materials International coauthorship International conference

T. Okauchi, J. Kunes, A. Hariki

Computational Approaches to Quantum Many-Body Systems 2023.10

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Presentation type：Poster presentation
X-ray Spectroscopies in Altermagnetic α-MnTe International coauthorship International conference

T. Yamaguchi, A. Hariki, D. Kriegner, K. W. Edmonds, P. Wadley, S. S. Dhesi, G. Springholz, L. Smejkal, K. Výborný, T. Jungwirth, J. Kunes

10th International Workshop on Strong Correlations and Angle-resolved Photoemission Spectroscopy 2023.09

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Presentation type：Poster presentation
LDA+DMFT approach to resonant inelastic x-ray scattering in strongly correlated magnetic systems International coauthorship International conference

Y. Takahashi, J. Kuneš, A. Hariki

RIXS / RXES workshop 2023 2023.08

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Presentation type：Poster presentation
Cu L3-edge resonant inelastic x-ray scattering on isostructural copper oxides CaCu3Fe4O12 and EuCu3Fe4O12 International coauthorship Domestic conference

T. Yamaguchi, R.-P. Wang, H.-Y. Huang, A. Singh, M. Goto, Y. Takahashi, Y. Kato, D.-J. Huang, J. Okamoto, M.-J. Huang, K. Kikuchi, H. Anzai, J. Kunes, I. Yamada, A. Hariki

RIXS / RXES workshop 2023 2023.08

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Presentation type：Poster presentation
LDA+DMFT approach to resonant inelastic x-ray scattering in correlated materials Invited International coauthorship International conference

Atsushi Hariki, Jan Kunes

RIXS / RXES workshop 2023 2023.08

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Presentation type：Oral presentation (invited, special)
LDA+DMFT approach to core-level spectroscopy in 4f and 5f intermetallic compounds Invited International conference

Atsushi Hariki

International Workshop on the Dual Nature of f-Electrons 2023 2023.06

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Presentation type：Oral presentation (invited, special)
Theoretical Modeling of Valence-skipping Perovskite Oxides PbCrO3 and PbCoO3 International coauthorship International conference

Mizuki Furo, Kyo-Hoon Ahn, Tatsuya Yamaguchi, Jan Kunes, Atsushi Hariki

International Conference on Strongly Correlated Electron Systems 2023 (SCES 2023) 2023.05

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Presentation type：Poster presentation
DFT+DMFT approach to X-ray photoemission spectroscopy in correlated transition metal perovskites Invited Domestic conference

Atsushi Hariki

Intermetallic charge transfer probed by X-ray spectroscopies 2023.05

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Presentation type：Oral presentation (invited, special)
Single- and Multimagnon Dynamics in Antiferromagnetic α-Fe2O3 Thin Films International coauthorship International conference

Atsushi Hariki, Jiemin Li, Yanhong Gu, Yoshihiro Takahashi, Keisuke Higashi, Taehun Kim, Yang Cheng, Fengyuan Yang, Jan Kunes, Valentina Bisogni

International Conference on Strongly Correlated Electron Systems 2023 (SCES 2023) 2023.05

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Presentation type：Poster presentation
Valence skipping, internal doping and structural transition in PbCoO3 and PbCrO3 under pressure Invited

Atsushi Hariki

2023.03

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Presentation type：Oral presentation (invited, special)
バレンススキッピングペロブスカイト酸化物PbCrO3とPbCoO3の電子構造・構造相転移に関する理論研究

不老美月, 山口達也, Kyo-Hoon Ahn, Jan Kunes, 播木敦

日本物理学会2023年春季大会 2023.03

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Presentation type：Poster presentation
Fe L3端高分解能共鳴非弾性X線散乱を用いたFe2O3の高次マグノン励起の研究

髙橋良拓, Jiemin Li, Yanhong Gu, 東啓介, Taehun Kim, Yang Cheng, Fengyuan Yang, Jan Kuneš, Jonathan Pelliciari, Valentina Bisogni, 播木敦

日本物理学会2023年春季大会 2023.03

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Presentation type：Oral presentation (general)
Kondo physics in CaCu3Ru4O12: LDA+DMFT and X-ray photoemission spectroscopy study Invited International coauthorship Domestic conference

A. Hariki, K. Kasebayashi, J. Kuneš

The 32nd Annual Meeting of MRS-J 2022.12

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Presentation type：Oral presentation (invited, special)
Valence skipping, internal doping and structural transition in PbCoO3 under pressure International coauthorship Domestic conference

M. Furo, T. Yamaguchi, K.-H. Ahn, J. Kunes, A. Hariki

The 32nd Annual Meeting of MRS-J 2022.12

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Presentation type：Oral presentation (general)
Metal-insulator transition in A-site ordered perovskite oxides ACu3Fe4O12 International coauthorship Domestic conference

T. Yamaguchi, K.-H. Ahn, W. Mathias, J. Kuneš, A. Hariki

The 32nd Annual Meeting of MRS-J 2022.12

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Presentation type：Oral presentation (general)
Dynamics of spin, orbital and charge excitations in strongly correlated materials revealed by resonant inelastic x-ray scattering Invited International conference

Atsushi Hariki

The 9th QST International Symposium 2022.11

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Presentation type：Oral presentation (invited, special)
Resonant inelastic x-ray scattering of hematite Fe2O3: LDA+DMFT analysis International coauthorship Domestic conference

Yoshihiro Takahashi, Jiemin Li, Yanhong Gu, Keisuke Higashi, Taehun Kim, Yang Cheng, Fengyuan Yang, Jan Kuneš, Jonathan Pelliciari, Valentina Bisogni, Atsushi Hariki

次世代放射光で切り拓く軟X線科学（日本放射光学会第14回若手研究会） 2022.09
LDA+DMFT approach to resonant inelastic x-ray scattering in correlated materials Invited Domestic conference

Atsushi Hariki

次世代放射光で切り拓く軟X線科学（日本放射光学会第14回若手研究会） 2022.09
CaCu3Ru4O12: A High Kondo-Temperature Transition Metal Oxide Invited International conference

Atsushi Hariki

International Workshop Computational Approaches to Magnetic Systems (CAMS-2022) 2022.08
CaCu3Ru4O12: A High Kondo-Temperature Transition Metal Oxide International coauthorship International conference

A. Hariki, K. Kasebayashi, J. Kuneš

International Conference on Strongly Correlated Electron Systems 2022 2022.08
Spin, orbital and charge excitations of Fe2O3 revealed by high resolution RIXS: LDA+DMFT analysis International coauthorship International conference

Y. Takahashi, L. Jiemin, K. Higashi, T. Uozumi, J. Kuneš, G. Yanhong, P. Jonathan, V. Bisogni, A. Hariki

International Conference on Strongly Correlated Electron Systems 2022 2022.08
Metal-insulator transition in A-site ordered perovskite oxides ACu3Fe4O12 International coauthorship International conference

T. Yamaguchi, K.-H. Ahn, W. Mathias, J. Kuneš, A. Hariki

International Conference on Strongly Correlated Electron Systems 2022 2022.08
CaCu3Ru4O12: A High Kondo-Temperature Transition Metal Oxide International coauthorship International conference

International Workshop on Correlations and Angle-Resolved Photoemission Spectroscopy (CORPES22) 2022.07
Core-level x-ray spectroscopy of infinite-layer nickelate: DFT+DMFT analysis International coauthorship International conference

K. Higashi, W. Mathias, T. Uozumi, Jan Kuneš, A. Hariki

18th International Conference on X-Ray Absorption Fine Structure (XAFS2022) 2022.07
Metal-insulator transition in A-site ordered perovskite oxides ACu3Fe4O1 International coauthorship International conference

T. Yamaguchi, K.-H. Ahn, W. Mathias, J. Kuneš, A. Hariki

International Workshop on Correlations and Angle-Resolved Photoemission Spectroscopy (CORPES22) 2022.07
Core-level x-ray photoemission spectroscopy of 3d transition metal oxides: DFT+DMFT analysis International coauthorship International conference

K. Higashi, T. Yamaguchi, M. Winder, T. Uozumi, J. Kuneš, A. Hariki

The 9th International Conference on Hard X-Ray Photoelectron Spectroscopy (HAXPES2022) 2022.06

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Presentation type：Poster presentation
CaCu3Ru4O12: high-temperature Kondo transition metal oxide Invited International coauthorship International conference

Atsushi Hariki

International Workshop on the Dual Nature of f-Electrons 2022 2022.06
LDA+DMFT approach to core-level x-ray spectroscopies in correlated electron systems Invited International coauthorship International conference

Atsushi Hariki, Keisuke Higashi, Tatsuya Yamaguchi, Winder Mathias, Takayuki Uozumi, Jan Kuneš

The 9th International Conference on Hard X-Ray Photoelectron Spectroscopy (HAXPES2022) 2022.06
四重ペロブスカイト酸化物CaCu3Ru4O12の近藤現象 International coauthorship Domestic conference

加瀬林啓人, Daisuke Takegami, Chang-Yang Kuo, B, Jonghwan Kim, Chun-Fu Chang, Cheng-En Liu, D, Chi-Nan Wu, E, Deepa Kasinathan, Simone G Altendorf, Katharina Höfer, Federico Meneghin, Andrea Marino, Yen-Fa Liao, Ku-Ding Tsuei, Chien-Te Chen, Kyung-Tae Ko, Axel Günther, Stefan Ebbinghaus, Junwon Seo, Dong-Hoon Lee, Gihun Ryu, Alexander Christoph Komarek, 菅野聡, 島川祐一, 田中新, 溝川貴司, Jan Kunes, Liu Hao Tjeng, 播木敦

日本物理学会第77回年次大会 2022.03
内殻X線分光を用いた超伝導層状ニッケル酸化物の電子状態の研究 International coauthorship Domestic conference

東啓介, Winder Mathias, Jan Kunes, 播木敦

日本物理学会第77回年次大会 2022.03
Aサイト秩序ペロブスカイト酸化物ACu3Fe4O12の金属絶縁体転移 International coauthorship Domestic conference

山口達也, Kyo-Hoon, Winder Mathias, Jan Kunes, 播木敦

日本物理学会第77回年次大会 2022.03
Fe2O3のFe L3端高分解能共鳴非弾性X線散乱 International coauthorship Domestic conference

髙橋良拓, Li Jiemin, 東啓介, 魚住孝幸, Jan Kuneš, Gu Yanhong, Pelliciari Jonathan, Valentina Bisogni, 播木敦

日本物理学会第77回年次大会 2022.03
LDA+DMFT approach to resonant inelastic x-ray scattering in correlated materials Invited International coauthorship International conference

A. Hariki, M. Winder, T. Uozumi, J. Kuneš

Global Summit on Condensed Matter Physics 2021.10
Core-level x-ray spectroscopy of infinite-layer nickelate : DFT+DMFT analysis International coauthorship International conference

K. Higashi, W. Mathias, T. Uozumi, J. Kunes, A. Hariki

International Conference on X-Ray Absorption Fine Structure 2021 Virtual (XAFS2021 Virtual) 2021.07
Kondo physics in the A-site ordered perovskite CaCu3Ir4O12 and CaCu3Ru4O12 International coauthorship International conference

Keito Kasebayashi, Jan Kunes, Atsushi Hariki

The 11th New Generation in Strongly Correlated Electron Systems 2021.06
Core-level x-ray spectroscopy of infinite-layer nickelate: LDA+DMFT study International coauthorship International conference

Atsushi Hariki, Keisuke Higashi, Mathis Winder, Jan Kuneš

The 11th New Generation in Strongly Correlated Electron Systems 2021.06
超伝導層状ニッケル酸化物の内殻X線分光 International coauthorship Domestic conference

東啓介, Winder Mathias, 魚住孝幸, Jan Kunes, 播木敦

日本物理学会第76回年次大会 2021.03
四重ペロブスカイト酸化物CaCu3Ir4O12の近藤現象 International coauthorship Domestic conference

加瀬林啓人, Jan Kunes, 播木敦

日本物理学会第76回年次大会 2021.03

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Grant-in-Aid for Scientific Research

動的平均場理論を用いた共鳴非弾性X線散乱のマルチスケール解析手法の開発と応用

2023
複カチオン秩序構造が創る Kondo-Zhang-Rice 相図の解明

2023
次元圧縮技術が拓く二粒子応答の第一原理計算

2023
量子古典融合アルゴリズムが拓く計算物質科学

2023
量子埋め込み理論による物質の有効模型構築

2023
次元圧縮技術が拓く二粒子応答の第一原理計算

2022
動的平均場理論を用いた共鳴非弾性X線散乱のマルチスケール解析手法の開発と応用

2022
動的平均場理論を用いた共鳴非弾性X線散乱のマルチスケール解析手法の開発と応用

2021
動的平均場理論を用いた共鳴非弾性X線散乱のマルチスケール解析手法の開発と応用

2021

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Charge of on-campus class subject

解析力学

2023 Weekly class Undergraduate
電磁気学演習

2023 Weekly class Undergraduate
量子力学演習

2023 Weekly class Undergraduate
電磁気学演習

2023 Weekly class Undergraduate
量子力学演習

2023 Weekly class Undergraduate
量子力学演習

2022 Weekly class Undergraduate
Practicum in Electromagnetic Theory

2021
Practicum in Quantum Mechanics

2021
Practicum in Quantum Mechanics

2020

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Number of papers published by graduate students

2023

Number of graduate students presentations：3
2022

Number of graduate students presentations：3

Number of instructed thesis, researches

2022

Number of instructed the graduation thesis：2
2021

Number of instructed the graduation thesis：2
2020

Number of instructed the graduation thesis：2

Social Activities

独自項目：未来の博士育成ラボ「コンピュータを使って、確率の奇妙な世界をのぞいてみよう」（対面実験）

Role(s)： Lecturer,　Planner