Ferromagnetism triggered by band tripling in ruthenate Sr4Ru3O10

N. Watanabe, S. Souma, K. Nakayama, K. Yamauchi, J. F. Ribeiro, Y. Wang, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, T. Oguchi, Z. Q. Mao, Y. P. Chen, T. Sato

Physical Review B　2024/10/15　Research paper (scientific journal)

Universal role of combined symmetry for the protection of the Dirac cone in antiferromagnetic topological insulators

Asuka Honma, Noriyuki Kabeya, Seigo Souma, Yongjian Wang, Kunihiko Yamauchi, Kosuke Nakayama, Daichi Takane, Kenichi Ozawa, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Tamio Oguchi, Takashi Takahashi, Noriaki Kimura, Yoichi Ando, Takafumi Sato

Physical Review B　2024/09/26　Research paper (scientific journal)

Observation of edge states derived from topological helix chains

K. Nakayama, A. Tokuyama, K. Yamauchi, A. Moriya, T. Kato, K. Sugawara, S. Souma, M. Kitamura, K. Horiba, H. Kumigashira, T. Oguchi, T. Takahashi, K. Segawa, T. Sato

Nature　2024/06/05　Research paper (scientific journal)

Indication of exchange interaction induced spin splitting in unoccupied electronic states of the high-TC ferromagnet (Cr0.35Sb0.65)2Te3

Chien-Wen Chuang, Y. Nakata, K. Hori, S. Gupta, F. M. F. de Groot, A. Fujimori, T. P. T. Nguyen, K. Yamauchi, I. Rajput, A. Lakhani, F.-H. Chang, H.-J. Lin, C.-T. Chen, F. Matsukura, seigo souma, T. Takahashi, T. Sato, Ashish Chainani

Physical Review B　Vol. 109　No. 19　2024/05/10　Research paper (scientific journal)

Wide-range thermal conductivity modulation based on protonated nickelate perovskite oxides

Hao-Bo Li, Zhiping Bian, Mitsuki Yoshimura, Kohei Shimoyama, Chengchao Zhong, Keiji Shimoda, Azusa N. Hattori, Kunihiko Yamauchi, Ikutaro Hamada, Hiromichi Ohta, Hidekazu Tanaka

Applied Physics Letters　Vol. 124　No. 19　2024/05/06　Research paper (scientific journal)

Goodenough–Kanamori–Anderson Rules in 2D Magnet: A Chemical Trend in MCl₂ with M = V, Mn, and Ni

Thi Phuong Thao Nguyen, Kunihiko Yamauchi

Journal of the Physical Society of Japan　Vol. 93　No. 3　2024/03/15　Research paper (scientific journal)

Observation of a giant band splitting in altermagnetic MnTe

T. Osumi, S. Souma, T. Aoyama, K. Yamauchi, A. Honma, K. Nakayama, T. Takahashi, K. Ohgushi, T. Sato

Physical Review B　Vol. 109　No. 11　2024/03/01　Research paper (scientific journal)

Hall effect of itinerant electron metamagnetic Lu(Co0.91Al0.09)2

Kosuke Tanabe, Shintaro Hatoyama, Hirofumi Wada, Kunihiko Yamauchi, Tamio Oguchi, Hisatomo Harima

Journal of Magnetism and Magnetic Materials　2024/02　Research paper (scientific journal)

Antiferromagnetic topological insulator with selectively gapped Dirac cones

A. Honma, D. Takane, S. Souma, K. Yamauchi, Y. Wang, K. Nakayama, K. Sugawara, M. Kitamura, K. Horiba, H. Kumigashira, K. Tanaka, T. K. Kim, C. Cacho, T. Oguchi, T. Takahashi, Yoichi Ando, T. Sato

Nature Communications　Vol. 14　No. 1　2023/11/17　Research paper (scientific journal)

Hydrogen-induced insulating state accompanied by interlayer charge ordering in SmNiO3

Kunihiko Yamauchi, Ikutaro Hamada

PHYSICAL REVIEW B　Vol. 108　No. 4　2023/07　Research paper (scientific journal)

Hall effect of RCo2 (R= Er and Lu) compounds

Kosuke Tanabe, Shintaro Hatoyama, Hirofumi Wada, Alexander V. Andreev, Kunihiko Yamauchi, Tamio Oguchi, Hisatomo Harima

Journal of Alloys and Compounds　Vol. 960　p. 170743-170743　2023/05　Research paper (scientific journal)

Ab initio prediction of anomalous Hall effect in antiferromagnetic CaCrO3

Thi Phuong Thao Nguyen, Kunihiko Yamauchi

Physical Review B　Vol. 107　No. 15　2023/04/13　Research paper (scientific journal)

Hall effect of itinerant electron metamagnet Co(S1-Se )2

Kosuke Tanabe, Yoshiro Maekawa, Hirofumi Wada, Kunihiko Yamauchi, Tamio Oguchi, Hisatomo Harima

Journal of Magnetism and Magnetic Materials　Vol. 557　p. 169460-169460　2022/09　Research paper (scientific journal)

Influence of Orbital Character on the Ground State Electronic Properties in the van Der Waals Transition Metal Iodides VI₃ and CrI₃

Alessandro De Vita, Thao Thi Phuong Nguyen, Roberto Sant, Gian Marco Pierantozzi, Danila Amoroso, Chiara Bigi, Vincent Polewczyk, Giovanni Vinai, Loi T. Nguyen, Tai Kong, Jun Fujii, Ivana Vobornik, Nicholas B. Brookes, Giorgio Rossi, Robert J. Cava, Federico Mazzola, Kunihiko Yamauchi, Silvia Picozzi, Giancarlo Panaccione

Nano Letters　Vol. 22　No. 17　p. 7034-7041　2022/08/30　Research paper (scientific journal)

Microscopic origin of magnetism in monolayer 3d transition metal dihalides

Kira Riedl, Danila Amoroso, Steffen Backes, Aleksandar Razpopov, Thi Phuong Thao Nguyen, Kunihiko Yamauchi, Paolo Barone, Stephen M. Winter, Silvia Picozzi, Roser Valentí

Physical Review B　Vol. 106　No. 3　2022/07/29　Research paper (scientific journal)

Rhombic Fermi surfaces in a ferromagnetic MnGa thin film with perpendicular magnetic anisotropy

M. Kobayashi, N. H. D. Khang, T. Takeda, K. Araki, R. Okano, M. Suzuki, K. Kuroda, K. Yaji, K. Sugawara, S. Souma, K. Nakayama, K. Yamauchi, M. Kitamura, K. Horiba, A. Fujimori, T. Sato, S. Shin, M. Tanaka, P. N. Hai

Physical Review Materials　2022/07　Research paper (scientific journal)

Spin-Polarized Band Structure at MoTe2/Bi2Se3 Interface Designed from First Principles

Kunihiko Yamauchi, Ryoma Shimazu, Tamio Oguchi

Journal of the Physical Society of Japan　Vol. 91　No. 4　2022/04/15　Research paper (scientific journal)

Pb/Bi heterostructure as a versatile platform to realize topological superconductivity

Ikuko Watanabe, Seigo Souma, Kosuke Nakayama, Katsuaki Sugawara, Chi Xuan Trang, Kouji Segawa, Kunihiko Yamauchi, Tamio Oguchi, Takashi Takahashi, Takafumi Sato

Progress of Theoretical and Experimental Physics　Vol. 2022　No. 4　2022/04/07　Research paper (scientific journal)

First-Principles Study on Cathode Properties of Li₂MTiO₄ and Na₂MTiO₄ (M = V, Cr, Mn, Fe, Co, Ni)

Kunihiko Yamauchi, Hiroyoshi Momida, Tamio Oguchi

Journal of the Physical Society of Japan　Vol. 91　No. 3　2022/03/15　Research paper (scientific journal)

First-principles Study on Piezoelectricity and Spontaneous Polarization in Bi(Fe,Co)O3

Hiroshi Katsumoto, Kunihiko Yamauchi, Tamio Oguchi

Journal of the Physical Society of Japan　Vol. 90　p. 124712-1-124712-10　2021/12/15　Research paper (scientific journal)

Dirac semimetal phase and switching of band inversion in XMg<inf>2</inf>Bi<inf>2</inf> (X = Ba and Sr)

Daichi Takane, Yuya Kubota, Kosuke Nakayama, Tappei Kawakami, Kunihiko Yamauchi, Seigo Souma, Takemi Kato, Katsuaki Sugawara, Shin ichiro Ideta, Kiyohisa Tanaka, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Tamio Oguchi, Takashi Takahashi, Kouji Segawa, Takafumi Sato

Scientific Reports　Vol. 11　No. 1　2021/12　Research paper (scientific journal)

Large magnetoresistance of a compensated metal Cu2Sb correlated with its Fermi surface topology

Mizuki Endo, Hideyuki Kawasoko, Seigo Soma, Kunihiko Yamauchi, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Noriaki Kimura, Tamio Oguchi, Takafumi Sato, Tomoteru Fukumura

Physical Review Materials　Vol. 5　No. 10　2021/10/06　Research paper (scientific journal)

Electric-field tuning of the magnetic properties of bilayer VI3: A first-principles study

Thi Phuong Thao Nguyen, Kunihiko Yamauchi, Tamio Oguchi, Danila Amoroso, Silvia Picozzi

Physical Review B　Vol. 104　No. 1　2021/07/01　Research paper (scientific journal)

Manipulation of Dirac Cone in Topological Insulator/Topological Insulator Heterostructure

Takumi Sato, Katsuaki Sugawara, Takemi Kato, Yuki Nakata, Seigo Souma, Kunihiko Yamauchi, Tamio Oguchi, Takashi Takahashi, Takafumi Sato

ACS Applied Electronic Materials　Vol. 3　No. 3　p. 1080-1085　2021/03/23　Research paper (scientific journal)

Origin of magnetovolume effect in a cobaltite

Ping Miao, Zhijian Tan, Sanghyun Lee, Yoshihisa Ishikawa, Shuki Torii, Masao Yonemura, Akihiro Koda, Kazuki Komatsu, Shinichi Machida, Asami Sano-Furukawa, Takanori Hattori, Xiaohuan Lin, Kuo Li, Takashi Mochiku, Ryosuke Kikuchi, Chizuru Kawashima, Hiroki Takahashi, Qingzhen Huang, Shinichi Itoh, Ryosuke Kadono, Yingxia Wang, Feng Pan, Kunihiko Yamauchi, Takashi Kamiyama

Physical Review B　Vol. 103　No. 9　2021/03/08　Research paper (scientific journal)

Identification of hidden orbital contributions in the La0.65Sr0.35MnO3 valence band

Offi, F., Yamauchi, K., Picozzi, S., Lollobrigida, V., Verna, A., Schlueter, C., Lee, T.-L., Regoutz, A., Payne, D.J., Petrov, A., Vinai, G., Pierantozzi, G.M., Pincelli, T., Panaccione, G., Borgatti, F.

Physical Review Materials　Vol. 5　No. 10　2021　Research paper (scientific journal)

Ta-181 nuclear quadrupole resonance study of the noncentrosymmetric superconductor PbTaSe2

Kunihiko Yamauchi

Physical Review B　Vol. 102　No. 21　2020/12/10　Research paper (scientific journal)

Conversion of a conventional superconductor into a topological superconductor by topological proximity effect

C. X. Trang, N. Shimamura, K. Nakayama, S. Souma, K. Sugawara, I. Watanabe, K. Yamauchi, T. Oguchi, K. Segawa, T. Takahashi, Yoichi Ando, T. Sato

Nature Communications　Vol. 11　No. 1　2020/12　Research paper (scientific journal)

Impact of Inter-site Spin-Orbit Coupling on Perpendicular Magnetocrystalline Anisotropy in Cobalt-Based Thin Films

Thi Phuong Thao Nguyen, Kunihiko Yamauchi, Kohji Nakamura, Tamio Oguchi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 89　No. 11　2020/11　Research paper (scientific journal)

DFT-based Engineering of Dirac Surface States in Topological-insulator Multilayers

Takao Kosaka, Kunihiko Yamauchi, Tamio Oguchi

Journal of the Physical Society of Japan　Vol. 89　No. 9　2020/09/15　Research paper (scientific journal)

Reversible thermally controlled spontaneous magnetization switching in perovskite-type manganite

Hajime Yamamoto, Satoru Sekikawa, Haruka Taniguchi, Michiaki Matsukawa, Kei Shigematsu, Takashi Honda, Kunihiko Yamauchi, Kazutaka Ikeda, Toshiya Otomo, Terutoshi Sakakura, Masaki Azuma, Shigeki Nimori, Yukio Noda, Hiroyuki Kimura

Applied Physics Letters　Vol. 117　No. 11　p. 112404-112404　2020/09/14　Research paper (scientific journal)

Modulation of Dirac electrons in epitaxial Bi2Se3 ultrathin films on van der Waals ferromagnet Cr2Si2Te6

Takemi Kato, Katsuaki Sugawara, Naohiro Ito, Kunihiko Yamauchi, Takumi Sato, Tamio Oguchi, Takashi Takahashi, Yuki Shiomi, Eiji Saitoh, Takafumi Sato

Physical Review Materials　Vol. 4　No. 8　2020/08/12　Research paper (scientific journal)

Unusual temperature evolution of the band structure of Bi(111) studied by angle-resolved photoemission spectroscopy and density functional theory

Takafumi Sato, Keiko Yamada, Takao Kosaka, Seigo Souma, Kunihiko Yamauchi, Katsuaki Sugawara, Tamio Oguchi, Takashi Takahashi

Physical Review B　Vol. 102　No. 8　2020/08/06　Research paper (scientific journal)

Synthesis, Structure, and Anomalous Magnetic Ordering of the Spin-1/2 Coupled Square Tetramer System K(NbO)Cu4(PO4)4.

Kenta Kimura, Daisuke Urushihara, Toru Asaka, Masayuki Toyoda, Atsushi Miyake, Masashi Tokunaga, Akira Matsuo, Koichi Kindo, Kunihiko Yamauchi, Tsuyoshi Kimura

Inorganic chemistry　Vol. 59　No. 15　p. 10986-10995　2020/08/03　Research paper (scientific journal)

Ferroelectric atomic displacement in multiferroic tetragonal perovskite Sr1/2Ba1/2MnO3

D. Okuyama, K. Yamauchi, H. Sakai, Y. Taguchi, Y. Tokura, K. Sugimoto, T. J. Sato, T. Oguchi

Physical Review Research　Vol. 2　No. 3　2020/07/08　Research paper (scientific journal)

Ferroelectric atomic displacement in multiferroic tetragonal perovskite Sr$_{1/2}$Ba$_{1/2}$MnO$_3$

D. Okuyama, K. Yamauchi, H. Sakai, Y. Taguchi, Y. Tokura, K. Sugimoto, T. J. Sato, T. Oguchi

Phys. Rev. Research (in press)　Vol. 75　No. 1　2020/06

Dimensionality reduction and band quantization induced by potassium intercalation in 1T-HfTe₂

Kunihiko Yamauchi

Physical Review Materials　2019　Research paper (scientific journal)

Evidence for bulk nodal loops and universality of Dirac-node arc surface states in ZrGeX_c (X_c = S, Se, Te)

Kunihiko Yamauchi

Physical Review B　Vol. 99　No. 24　2019　Research paper (scientific journal)

Possible emergence of a skyrmion phase in ferroelectric GaMo₄S₈

Kunihiko Yamauchi

Physical Review B　Vol. 99　No. 21　2019　Research paper (scientific journal)

Topology analysis for anomalous Hall effect in the noncollinear antiferromagnetic states of Mn(3)AN (A = Ni, Cu, Zn, Ga, Ge, Pd, In, Sn, Ir, Pt)

Kunihiko Yamauchi

Physical Review B　Vol. 100　No. 9　2019　Research paper (scientific journal)

Ultrathin Bismuth Film on 1T-TaS2: Structural Transition and Charge-Density-Wave Proximity Effect

Keiko Yamada, Seigo Souma, Kunihiko Yamauchi, Natsumi Shimamura, Katsuaki Sugawara, Chi Xuan Trang, Tamio Oguchi, Keiji Ueno, Takashi Takahashi, Takafumi Sato

Nano Letters　Vol. 18　No. 5　p. 3235-3240　2018/05/09　Research paper (scientific journal)

A -cation control of magnetoelectric quadrupole order in A(TiO)Cu4(PO4)4 (A=Ba,Sr, and Pb)

K. Kimura, M. Toyoda, P. Babkevich, K. Yamauchi, M. Sera, V. Nassif, H. M. Rønnow, T. Kimura

Physical Review B　Vol. 97　No. 13　2018/04/18　Research paper (scientific journal)

Ultrathin Bismuth Film on High-Temperature Cuprate Superconductor Bi2Sr2CaCu2O8+delta as a Candidate of a Topological Superconductor

Sato, Takafumi, Hanaguri, Tetsuo, Takahashi, Takashi, Koike, Yoji, Noji, Takashi, Kudo, Kazutaka, Oguchi, Tamio, Yamauchi, Kunihiko, Trang, Chi Xuan, Nakayama, Kosuke, Iwaya, Katsuya, Souma, Seigo, Sucharitakul, Sukrit, Sugawara, Katsuaki, Shimamura, Natsumi

ACS Nano　Vol. 12　No. 11　p. 10977-10983　2018　Research paper (scientific journal)

Magnetic structural unit with convex geometry: A building block hosting an exchange-striction-driven magnetoelectric coupling

Yukitoshi Motome, Masayuki Toyoda, Masayuki Hagiwara, Mitsuru Akaki, Koichi Kindo, Akira Matsuo, Masashi Tokunaga, Atsushi Miyake, Kunihiko Yamauchi, Yasuyuki Kato, Shojiro S Kimura

Physical Review Materials　Vol. 2　No. 10　2018　Research paper (scientific journal)

Topological phase transition coupled with spin-valley physics in ferroelectric oxide heterostructures

Silvia Picozzi, Paolo Barone, Kunihiko Yamauchi

Physical Review B　Vol. 95　No. 3　2017　Research paper (scientific journal)

Band splitting and Weyl nodes in trigonal tellurium studied by angle-resolved photoemission spectroscopy and density functional theory

Takahashi, T., Sato, T., Oguchi, T., Sugawara, K., Souma, S., Yamauchi, K., Kuno, M., Nakayama, K.

Physical Review B　Vol. 95　No. 12　2017　Research paper (scientific journal)

Influences of Orientation on Magnetoelectric Coupling at La1-x Sr (x) MnO3/BaTiO3 Interface from Ab Initio Calculations

Nam Nhat Hoang, Oguchi, Tamio, Yamauchi, Kunihiko, Thuy Trang Nguyen

Journal of Electronic Materials　Vol. 46　No. 6　p. 3808-3814　2017　Research paper (scientific journal)

Role of square planar coordination in the magnetic properties of Na4IrO4

Picozzi, Silvia, Yamauchi, Kunihiko, Autieri, Carmine, Ming, Xing

Physical Review B　Vol. 96　No. 20　2017　Research paper (scientific journal)

Helical magnetic structure in cubic chiral crystal Pr5Ru3Al2

Okuyama Daisuke, Makino Koya, Avdeev Maxim, Ohishi Kazuki, Yamauchi Kunihiko, Oguchi Tamio, Sato Taku J

ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES　Vol. 73　p. C1343-C1343　2017

19pBN-6 Stacking Effect on Electronic Structure Topology in Graphene

Hirano H., Yamauchi K., Kotaka H., Oguchi T.

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 2037-2037　2016

19pBA-13 Surface Fermi-arc of Weyl-semimetal candidate NbP studied by high-resolution ARPES

Souma S., Wang Z., Kotaka H., Sato T., Nakayama K., Tanaka Y., Kimizuka H., Takahashi T., Yamauchi K., Oguchi T., Segawa K., Ando Y.

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1328-1328　2016

19aBP-6 High-resolution ARPES study on noncentrosymmetric Weyl-semimetallic transition-metal monopnictides

Takane D., Souma S., Wang Z., Kotaka H., Sato T., Nakayama K., Tanaka Y., Kimizuka H., Takahashi T., Yamauchi K., Oguchi T., Segawa K., Ando Y.

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1446-1446　2016

Termination dependence of surface electronic states in Weyl semimetal NbP.

Takane D., Souma S., Wang Z., Kotaka H., Sato T., Nakayama K., Tanaka Y., Kimizuka H., Takahashi T., Yamauchi K., Oguchi T., Segawa K., Ando Y.

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 2314-2314　2016

Magnetic quadrupolar order and magnetoelectric coupling in the chiral antiferromagnet Ba(TiO)Cu₄(PO₄)₄

Kimura K., Babkevich P., Sera M., Toyoda M., Yamauchi K., Nakano T., Nozue Y., Ronnow H.M., Kimura T.

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1848-1848　2016

Ab initio density functional theory calculation of BiMO₃ (M:3d transition metal)

Yamauchi Kunihiko, Seo Hitoshi, Naka Makoto, Motome Yukitoshi

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1795-1795　2016

Direct observation of nonequivalent Fermi-arc states of opposite surfaces in the noncentrosymmetric Weyl semimetal NbP

Souma, S., Wang, Zhiwei, Kotaka, H., Sato, T., Nakayama, K., Tanaka, Y., Kimizuka, H., Takahashi, T., Yamauchi, K., Oguchi, T., Segawa, Kouji, Ando, Yoichi

Physical Review B　Vol. 93　No. 16　2016　Research paper (scientific journal)

Magnetodielectric detection of magnetic quadrupole order in Ba(TiO)Cu4(PO4)4 with Cu4O12 square cupolas

H. M. Rønnow, Y. Nozue, T. Nakano, R. D. Johnson, D. D. Khalyavin, P. Manuel, T. Fennell, J. Martius, G. S. Tucker, K. Yamauchi, M. Toyoda, M. Sera, P. Babkevich, K. Kimura

Nature Communications　Vol. 7　2016　Research paper (scientific journal)

Magnetoelectricity in CaFeO2 and MgFeO2,

T. Oguchi, K. Yamauchi, S. Picozzi

2015/10　Research paper (other academic)

Jahn-Teller distortions as a novel source of multiferroicity

Paolo Barone, Kunihiko Yamauchi, Silvia Picozzi

Physical Review B - Condensed Matter and Materials Physics　Vol. 92　No. 1　2015/07/27　Research paper (scientific journal)

Superexchange interaction in the A-site ordered perovskite YMn3Al4O12

Masayuki Toyoda, Takashi Saito, Kunihiko Yamauchi, Yuichi Shimakawa, Tamio Oguchi

PHYSICAL REVIEW B　Vol. 92　No. 1　2015/07　Research paper (scientific journal)

Jahn-Teller distortions as a novel source of multiferroicity

Paolo Barone, Kunihiko Yamauchi, Silvia Picozzi

PHYSICAL REVIEW B　Vol. 92　No. 1　2015/07　Research paper (scientific journal)

A -site-driven ferroelectricity in strained ferromagnetic La2 NiMnO6 thin films

R. Takahashi, I. Ohkubo, K. Yamauchi, M. Kitamura, Y. Sakurai, M. Oshima, T. Oguchi, Y. Cho, M. Lippmaa

Physical Review B - Condensed Matter and Materials Physics　Vol. 91　No. 13　2015/04　Research paper (scientific journal)

16aAD-1 Stress-induced switching of crystal axes and chirality in chiral ferroelastic crystal

Ueda H., Kimura K., Yamauchi K., Kimura T.

Meeting Abstracts of the Physical Society of Japan　Vol. 70　p. 2402-2402　2015

21pAC-11 Origin of the band dispersion in a metal phthalocyanine crystal

Yanagisawa S., Yamauchi K., Inaoka T., Oguchi T., Hamada I.

Meeting Abstracts of the Physical Society of Japan　Vol. 70　p. 1805-1805　2015

Ab Initio Study on Pressure-Induced Phase Transition in LaCu3Fe4O12

Oguchi, Tamio, Yamauchi, Kunihiko, Toyoda, Masayuki, Isoyama, Keisuke

Journal of the Physical Society of Japan　Vol. 84　No. 3　2015　Research paper (scientific journal)

A-site-driven ferroelectricity in strained ferromagnetic La2NiMnO6 thin films

Lippmaa, M., Cho, Y., Oguchi, T., Oshima, M., Sakurai, Y., Kitamura, M., Yamauchi, K., Ohkubo, I., Takahashi, R.

Physical Review B　Vol. 91　No. 13　2015　Research paper (scientific journal)

Impact of Ferroelectric Distortion on Thermopower in BaTiO3

Oguchi, Tamio, Shirai, Koun, Yamauchi, Kunihiko, Saijo, Hiroaki

Journal of the Physical Society of Japan　Vol. 84　No. 5　2015　Research paper (scientific journal)

Origin of the band dispersion in a metal phthalocyanine crystal

Susumu Yanagisawa, Kunihiko Yamauchi, Takeshi Inaoka, Tamio Oguchi, Ikutaro Hamada

Physical Review B - Condensed Matter and Materials Physics　Vol. 90　No. 24　2014/12/23　Research paper (scientific journal)

Origin of the band dispersion in a metal phthalocyanine crystal

Susumu Yanagisawa, Kunihiko Yamauchi, Takeshi Inaoka, Tamio Oguchi, Ikutaro Hamada

PHYSICAL REVIEW B　Vol. 90　No. 24　2014/12　Research paper (scientific journal)

Ab-initio Prediction of Magnetoelectricity in Infinite-Layer CaFeO2and MgFeO2

Kunihiko Yamauchi, Tamio Oguchi, Silvia Picozzi

Journal of the Physical Society of Japan　Vol. 83　No. 9　p. 094712-094712　2014/09/15　Research paper (scientific journal)

Giant spin-driven ferroelectric polarization in TbMnO3 under high pressure

T. Aoyama, K. Yamauchi, A. Iyama, S. Picozzi, K. Shimizu, T. Kimura

NATURE COMMUNICATIONS　Vol. 5　2014/09　Research paper (scientific journal)

Electronic ferroelectricity induced by charge and orbital orderings

Kunihiko Yamauchi, Paolo Barone

JOURNAL OF PHYSICS-CONDENSED MATTER　Vol. 26　No. 10　2014/03

Helical magnetic structure in cubic chiral crystal Pr5Ru3Al2

Okuyama Daisuke, Makino Koya, Avdeev Maxim, Ohishi Kazuki, Yamauchi Kunihiko, Oguchi Tamio, Sato Taku J

ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES　Vol. 70　2014

Mechanism of Ferroelectricity in Half-Doped Manganites with Pseudocubic and Bilayer Structure

Kunihiko Yamauchi, Silvia Picozzi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 82　No. 11　2013/11　Research paper (scientific journal)

First-principles calculation of x-ray absorption spectra for the a-site ordered perovskite CaCu3Fe4O12

Takuya Ueda, Mitsuru Kodera, Kunihiko Yamauchi, Tamio Oguchi

Journal of the Physical Society of Japan　Vol. 82　No. 9　2013/09　Research paper (scientific journal)

Influence of lone pair doping on the multiferroic property of orthorhombic HoMnO3: ab initio prediction

Sathya Sheela Subramanian, Kunihiko Yamauchi, Taisuke Ozaki, Tamio Oguchi, Baskaran Natesan

JOURNAL OF PHYSICS-CONDENSED MATTER　Vol. 25　No. 38　2013/09　Research paper (scientific journal)

Highly sensitive spin-crossover transition in a metal-organic molecular crystal

Kunihiko Yamauchi, Ikutaro Hamada, Tamio Oguchi

Physical Review B - Condensed Matter and Materials Physics　Vol. 88　No. 3　2013/07/09　Research paper (scientific journal)

Highly sensitive spin-crossover transition in a metal-organic molecular crystal

Kunihiko Yamauchi, Ikutaro Hamada, Tamio Oguchi

PHYSICAL REVIEW B　Vol. 88　No. 3　2013/07　Research paper (scientific journal)

Ab initio study of magnetic coupling in CaCu3B4O 12 (B=Ti, Ge, Zr, and Sn)

Masayuki Toyoda, Kunihiko Yamauchi, Tamio Oguchi

Physical Review B - Condensed Matter and Materials Physics　Vol. 87　No. 22　2013/06/27　Research paper (scientific journal)

Theoretical Prediction of Multiferroicity in SmBaMn2O6

Kunihiko Yamauchi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 82　No. 4　2013/04　Research paper (scientific journal)

Beyond standard local density approximation in the study of magnetoelectric effects in Fe/BaTiO3 and Co/BaTiO3 interfaces

Domenico Di Sante, Kunihiko Yamauchi, Silvia Picozzi

Journal of Physics Condensed Matter　Vol. 25　No. 6　2013/02/13　Research paper (scientific journal)

Effects of strain on ferroelectric polarization and magnetism in orthorhombic HoMnO3

Diana Iusan, Kunihiko Yamauchi, Paolo Barone, Biplab Sanyal, Olle Eriksson, Gianni Profeta, Silvia Picozzi

PHYSICAL REVIEW B　Vol. 87　No. 1　2013/01　Research paper (scientific journal)

Structure and intermolecular bonding in NaBH 4•2H 2O: A density functional theory study

Ikutaro Hamada, Kunihiko Yamauchi, Tamio Oguchi

Physical Review B - Condensed Matter and Materials Physics　Vol. 85　No. 21　2012/06/20　Research paper (scientific journal)

Emergent phenomena in perovskite-type manganites

Y. Taguchi, H. Sakai, D. Okuyama, S. Ishiwata, J. Fujioka, T. Fukuda, D. Hashizume, F. Kagawa, Y. Takahashi, R. Shimano, Y. Tokunaga, Y. Kaneko, A. Nakao, H. Nakao, Y. Murakami, K. Sugimoto, M. Takata, K. Yamauchi, S. Picozzi, A. Q. R. Baron, T. Arima, Y. Tokura

PHYSICA B-CONDENSED MATTER　Vol. 407　No. 11　p. 1685-1688　2012/06　Research paper (scientific journal)

Structure and intermolecular bonding in NaBH4 center dot 2H(2)O: A density functional theory study

Ikutaro Hamada, Kunihiko Yamauchi, Tamio Oguchi

PHYSICAL REVIEW B　Vol. 85　No. 21　2012/06　Research paper (scientific journal)

Orbital degrees of freedom as origin of magnetoelectric coupling in magnetite

Kunihiko Yamauchi, Silvia Picozzi

PHYSICAL REVIEW B　Vol. 85　No. 8　2012/02　Research paper (scientific journal)

Theoretical investigation of magnetoelectric effects in Ba2CoGe2O7

Kunihiko Yamauchi, Paolo Barone, Silvia Picozzi

PHYSICAL REVIEW B　Vol. 84　No. 16　2011/10　Research paper (scientific journal)

Role of van der Waals interaction in crystalline ammonia borane

Kunihiko Yamauchi, Ikutaro Hamada, Hongbin Huang, Tamio Oguchi

APPLIED PHYSICS LETTERS　Vol. 99　No. 18　2011/10　Research paper (scientific journal)

Magnetically driven ferroelectric atomic displacements in orthorhombic YMnO3

D. Okuyama, S. Ishiwata, Y. Takahashi, K. Yamauchi, S. Picozzi, K. Sugimoto, H. Sakai, M. Takata, R. Shimano, Y. Taguchi, T. Arima, Y. Tokura

PHYSICAL REVIEW B　Vol. 84　No. 5　2011/08　Research paper (scientific journal)

Ferroelectricity due to Orbital Ordering in E-Type Undoped Rare-Earth Manganites

Paolo Barone, Kunihiko Yamauchi, Silvia Picozzi

PHYSICAL REVIEW LETTERS　Vol. 106　No. 7　2011/02　Research paper (scientific journal)

Ab initio Investigations of Fe2+/Fe3+ Bond Dimerization and Ferroelectricity Induced by Intermediate Site/Bond-Centered Charge Ordering in Magnetite

Tetsuya Fukushima, Kunihiko Yamauchi, Silvia Picozzi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 80　No. 1　2011/01　Research paper (scientific journal)

Magnetically induced ferroelectricity in Cu2MnSnS4 and Cu2MnSnSe4

Tetsuya Fukushima, Kunihiko Yamauchi, Silvia Picozzi

PHYSICAL REVIEW B　Vol. 82　No. 1　2010/07　Research paper (scientific journal)

Bandstructure and Fermi Surfaces of CeRh3B2

Kunihiko Yamauchi, Akira Yanase, Hisatomo Harima

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 79　No. 4　2010/04　Research paper (scientific journal)

Magnetic anisotropy in Li-phosphates and origin of magnetoelectricity in LiNiPO4

Kunihiko Yamauchi, Silvia Picozzi

PHYSICAL REVIEW B　Vol. 81　No. 2　2010/01　Research paper (scientific journal)

Magnetic anisotropy in Li-phosphates and origin of magnetoelectricity in LiNiPO4

YAMAUCHI, K, PICOZZI, S

Physical Review B　Vol. 81　No. 2　2010

Ferroelectric Switching in Multiferroic Magnetite (Fe3O4) Thin Films

Marin Alexe, Michael Ziese, Dietrich Hesse, Pablo Esquinazi, Kunihiko Yamauchi, Tetsuya Fukushima, Silvia Picozzi, Ulrich Goesele

ADVANCED MATERIALS　Vol. 21　No. 44　p. 4452-+　2009/11　Research paper (scientific journal)

Exchange Bias Driven by the Dzyaloshinskii-Moriya Interaction and Ferroelectric Polarization at G-Type Antiferromagnetic Perovskite Interfaces

Shuai Dong, Kunihiko Yamauchi, Seiji Yunoki, Rong Yu, Shuhua Liang, Adriana Moreo, J. -M. Liu, Silvia Picozzi, Elbio Dagotto

PHYSICAL REVIEW LETTERS　Vol. 103　No. 12　2009/09　Research paper (scientific journal)

Ferroelectricity in multiferroic magnetite Fe3O4 driven by noncentrosymmetric Fe2+/Fe3+ charge-ordering: First-principles study

Kunihiko Yamauchi, Tetsuya Fukushima, Silvia Picozzi

PHYSICAL REVIEW B　Vol. 79　No. 21　2009/06　Research paper (scientific journal)

Magnetically induced ferroelectricity in TbMnO3: inverse Goodenough-Kanamori interaction

Kunihiko Yamauchi, Silvia Picozzi

JOURNAL OF PHYSICS-CONDENSED MATTER　Vol. 21　No. 6　2009/02　Research paper (scientific journal)

Field angle dependence of the zero-energy density of states in unconventional superconductors: analysis of the borocarbide superconductor YNi2B2C

Yuki Nagai, Nobuhiko Hayashi, Yusuke Kato, Kunihiko Yamauchi, Hisatomo Harima

25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 5　Vol. 150　No. 5　2009　Research paper (international conference proceedings)

de Haas-van Alphen effect in the mixed state of LuNi(2)B(2)C: Anisotropy and field dependence of the damping due to superconductivity

T. Isshiki, N. Kimura, H. Aoki, T. Terashima, S. Uji, K. Yamauchi, H. Harima, D. Jaiswal-Nagar, S. Ramakrishnan, A. K. Grover

PHYSICAL REVIEW B　Vol. 78　No. 13　2008/10　Research paper (scientific journal)

Microscopic mechanisms for improper ferroelectricity in multiferroic perovskites: a theoretical review

Silvia Picozzi, Kunihiko Yamauchi, Ivan A. Sergienko, Cengiz Sen, Biplab Sanyal, Elbio Dagotto

JOURNAL OF PHYSICS-CONDENSED MATTER　Vol. 20　No. 43　2008/10

22pQE-6 Field angle dependence of the zero-energy density of states in unconventional superconductors : analysis of the borocarbide superconductor YNi_2B_2C

Nagai Y, Hayashi N, Kato Y, Yamauchi K, Harima H

Meeting abstracts of the Physical Society of Japan　Vol. 63　No. 2　p. 557-557　2008/08/25

Magnetically induced ferroelectricity in orthorhombic manganites: Microscopic origin and chemical trends

Kunihiko Yamauchi, Frank Freimuth, Stefan Bluegel, Silvia Picozzi

PHYSICAL REVIEW B　Vol. 78　No. 1　2008/07　Research paper (scientific journal)

Calculated positions of point nodes in the gap structure of the borocarbide superconductor YNi(2)B(2)C

Yuki Nagai, Yusuke Kato, Nobuhiko Hayashi, Kunihiko Yamauchi, Hisatomo Harima

PHYSICAL REVIEW B　Vol. 76　No. 21　2007/12　Research paper (scientific journal)

Dual nature of improper ferroelectricity in a magnetoelectric multiferroic

S. Picozzi, K. Yamauchi, B. Sanyal, I. A. Sergienko, E. Dagotto

PHYSICAL REVIEW LETTERS　Vol. 99　No. 22　2007/11　Research paper (scientific journal)

Interface effects at a half-metal/ferroelectric junction

Kunihiko Yamauchi, Biplab Sanyal, Silvia Picozzi

APPLIED PHYSICS LETTERS　Vol. 91　No. 6　2007/08　Research paper (scientific journal)

20aXE-13 Theory on Positions of Gap-Nodes with Considering the Band.Structure of YNi_2B_2C

Nagai Y, Kato Y, Hayashi N, Yamauchi K, Harima H

Meeting abstracts of the Physical Society of Japan　Vol. 62　No. 1　p. 617-617　2007/02/28

First-principles stabilization of an unconventional collinear magnetic ordering in distorted manganites

S. Picozzi, K. Yamauchi, G. Bihlmayer, S. Bluegel

PHYSICAL REVIEW B　Vol. 74　No. 9　2006/09　Research paper (scientific journal)

Fermi surfaces of CeRh3B2: An LSDA+U study

K Yamauchi, A Yanase, H Harima

PHYSICA B-CONDENSED MATTER　Vol. 378-80　p. 688-689　2006/05　Research paper (scientific journal)

Bandstructure calculations and fermi surfaces of RNi2B2C

K Yamauchi, H Harima

PHYSICA B-CONDENSED MATTER　Vol. 359　p. 597-599　2005/04　Research paper (scientific journal)

Band structure calculations and Fermi surfaces of YNi2B2C

K Yamauchi, H Katayama-Yoshida, A Yanase, H Harima

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS　Vol. 412　p. 225-229　2004/10　Research paper (scientific journal)

Charge and spin states of transition-metal atoms in a hemoprotein based on the extended Haldane-Anderson model

Kunihiko Yamauchi, Hideaki Maebashi, Hiroshi Katayama-Yoshida

Journal of the Physical Society of Japan　Vol. 72　No. 8　p. 2029-2032　2003/08　Research paper (scientific journal)