研究者詳細 - JESCHKE HARALD OLAF

論文 - JESCHKE HARALD OLAF

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Spin Vortex Crystal Order in Organic Triangular Lattice Compound

Kira Riedl, Elena Gati, David Zielke, Steffi Hartmann, Oleg M. Vyaselev, Nataliya D. Kushch, Harald O. Jeschke, Michael Lang, Roser Valentí, Mark V. Kartsovnik, Stephen M. Winter

Physical Review Letters 127 ( 14 ) 2021年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：American Physical Society

Organic salts represent an ideal experimental playground for studying the interplay between magnetic and charge degrees of freedom, which has culminated in the discovery of several spin-liquid candidates such as (). Recent theoretical studies indicate the possibility of chiral spin liquids stabilized by ring exchange, but the parent states with chiral magnetic order have not been observed in this material family. In this Letter, we discuss the properties of the recently synthesized (). Based on analysis of specific heat, magnetic torque, and NMR measurements combined with ab initio calculations, we identify a spin-vortex crystal order. These observations definitively confirm the importance of ring exchange in these materials and support the proposed chiral spin-liquid scenario for triangular lattice organics.

DOI： 10.1103/PhysRevLett.127.147204

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Magnetization Process of Atacamite: A Case of Weakly Coupled S=1/2 Sawtooth Chains

L. Heinze, H. O. Jeschke, I. I. Mazin, A. Metavitsiadis, M. Reehuis, R. Feyerherm, J.-U. Hoffmann, M. Bartkowiak, O. Prokhnenko, A. U. B. Wolter, X. Ding, V. S. Zapf, C. Corvalán Moya, F. Weickert, M. Jaime, K. C. Rule, D. Menzel, R. Valentí, W. Brenig, S. Süllow

Physical Review Letters 2021年5月

Hole doping and chemical pressure effects on the strong coupling superconductor PdTe

Li Chen, Ando Ide, Harald O. Jeschke, Kaya Kobayashi

Physical Chemistry Chemical Physics 23 ( 23 ) 13331 - 13337 2021年

Evidence for a three-dimensional quantum spin liquid in PbCuTe2O6

Shravani Chillal, Yasir Iqbal, Harald O. Jeschke, Jose A. Rodriguez-Rivera, Robert Bewley, Pascal Manuel, Dmitry Khalyavin, Paul Steffens, Ronny Thomale, A. T. M. Nazmul Islam, Johannes Reuther, Bella Lake

Nature Communications 11 ( 1 ) 2020年12月

Electronic structures of Bi2Se3 and AgxBi2Se3 under pressure studied by high-resolution x-ray absorption spectroscopy and density functional theory calculations

Hitoshi Yamaoka, Harald O. Jeschke, Xiaofan Yang, Tong He, Hidenori Goto, Nozomu Hiraoka, Hirofumi Ishii, Jun'ichiro Mizuki, Yoshihiro Kubozono

Physical Review B 102 ( 15 ) 2020年10月

q=0 long-range magnetic order in centennialite CaCu3(OD)6Cl2·0.6D2O : A spin- 12 perfect kagome antiferromagnet with J1−J2−Jd

K. Iida, H. K. Yoshida, A. Nakao, H. O. Jeschke, Y. Iqbal, K. Nakajima, S. Ohira-Kawamura, K. Munakata, Y. Inamura, N. Murai, M. Ishikado, R. Kumai, T. Okada, M. Oda, K. Kakurai, M. Matsuda

Physical Review B 101 ( 22 ) 2020年6月

Importance of the Fermi surface and magnetic interactions for the superconducting dome in electron-doped FeSe intercalates

Makoto Shimizu, Nayuta Takemori, Daniel Guterding, Harald O. Jeschke

Physical Review B 101 ( 18 ) 2020年5月

Unusual electronic state of Sn in AgSnSe2 査読

Y. Naijo, K. Hada, T. Furukawa, T. Itou, T. Ueno, K. Kobayashi, I. I. Mazin, H. O. Jeschke, J. Akimitsu

Physical Review B 101 ( 7 ) 075134 2020年2月

Coexistence and Interaction of Spinons and Magnons in an Antiferromagnet with Alternating Antiferromagnetic and Ferromagnetic Quantum Spin Chains

Zhang, H., Zhang, H., Zhao, Z., Zhao, Z., Gautreau, D., Gautreau, D., Raczkowski, M., Raczkowski, M., Saha, A., Saha, A., Garlea, V. O., Garlea, V. O., Cao, H., Cao, H., Hong, T., Hong, T., Jeschke, H. O., Jeschke, H. O., Mahanti, Subhendra D., Mahanti, Subhendra D., Birol, T., Birol, T., Assaad, F. F., Assaad, F. F., Ke, X., Ke, X.

Physical Review Letters 125 ( 3 ) 2020年

Charge ordering and low-temperature lattice distortion in the β′ -(BEDT- TTF)2CF3CF2SO3 dimer Mott insulator

Olejniczak, I., Wesołowski, R., Jeschke, H.O., Valentí, R., Barszcz, B., Schlueter, J.A.

Physical Review B 101 ( 3 ) 2020年

Radical cation salts of BETS and ET with dicyanamidocuprate anions demonstrating metal-insulator and semiconductor-semiconductor transitions

Kushch, Nataliya D., Kopotkov, Vyacheslav A., Shilov, Gennady, V, Akimov, Alexander, V, Tokarev, Sergey, V, Yagubskii, Eduard B., Zverev, Vladimir N., Khasanov, Salavat S., Winter, Stephen M., Jeschke, Harald O.

Polyhedron 189 2020年

ラーベス相Au化合物の超伝導Ⅲ

高橋武士, 秋光純, 二宮博樹, 石田茂之, 永崎洋, 小林夏野

日本物理学会講演概要集 75.1 2022 - 2022 2020年

Novel Fe-Based Superconductor LaFe2As2 in Comparison with Traditional Pnictides

I. I. Mazin, Makoto Shimizu, Nayuta Takemori, Harald O. Jeschke

Physical Review Letters 123 ( 26 ) 2019年12月

Breathing chromium spinels: a showcase for a variety of pyrochlore Heisenberg Hamiltonians

Pratyay Ghosh, Yasir Iqbal, Tobias Müller, Ravi T. Ponnaganti, Ronny Thomale, Rajesh Narayanan, Johannes Reuther, Michel J. P. Gingras, Harald O. Jeschke

npj Quantum Materials 4 ( 1 ) 2019年12月

Pressure-induced superconductivity in Bi2-xSbxTe3-ySey 査読

He Tong, Yang Xiaofan, Taguchi Tomoya, Ueno Teppei, Kobayashi Kaya, Akimitsu Jun, Yamaoka Hitoshi, Ishii Hirofumi, Liao Yen-Fa, Ota Hiromi, Goto Hidenori, Eguchi Ritsuko, Terashima Kensei, Yokoya Takayoshi, Jeschke Harald O, Wu Xianxin, Kubozono Yoshihiro

PHYSICAL REVIEW B 100 ( 9 ) 2019年9月

From kagome strip to kagome lattice: Realizations of frustrated S= 12 antiferromagnets in Ti(III) fluorides

Harald O. Jeschke, Hiroki Nakano, Tôru Sakai

Physical Review B 99 ( 14 ) 2019年4月

記述言語：英語掲載種別：研究論文（学術雑誌）

© 2019 American Physical Society. We investigate the connection between highly frustrated kagome based Hamiltonians and a recently synthesized family of materials containing Ti3+S=12 ions. Employing a combination of all electron density functional theory and numerical diagonalization techniques, we establish the Heisenberg Hamiltonians for the distorted kagome antiferromagnets Rb2NaTi3F12,Cs2NaTi3F12, and Cs2KTi3F12. We determine magnetization curves in excellent agreement with experimental observations. Our calculations successfully clarify the relationship between the experimental observations and the magnetization-plateau behavior at 13 height of the saturation and predict characteristic behaviors under fields that are higher than the experimentally measured region. We demonstrate that the studied Ti(III) family of materials interpolates between the kagome strip and kagome lattice.

DOI： 10.1103/PhysRevB.99.140410

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Large resistivity reduction in mixed-valent CsAuBr3 under pressure

Naumov, P., Huangfu, S., Wu, X., Schilling, A., Thomale, R., Felser, C., Medvedev, S., Jeschke, H.O., Von Rohr, F.O.

Physical Review B 100 ( 15 ) 2019年

Frustrated Magnetism in Mott Insulating (V1-xCrx)2 O3

Leiner, J.C., Jeschke, H.O., Valentí, R., Zhang, S., Savici, A.T., Lin, J.Y.Y., Stone, M.B., Lumsden, M.D., Hong, J., Delaire, O., Bao, W., Broholm, C.L.

Physical Review X 9 ( 1 ) 2019年

Quantum and Classical Phases of the Pyrochlore Heisenberg Model with Competing Interactions

Iqbal, Y., Müller, T., Ghosh, P., Gingras, M.J.P., Jeschke, H.O., Rachel, S., Reuther, J., Thomale, R.

Physical Review X 9 ( 1 ) 2019年

Successive phase transitions and magnetization plateau in the spin-1 triangular-lattice antiferromagnet Ba2La2NiTe2 O12 with small easy-axis anisotropy

Saito, M., Watanabe, M., Kurita, N., Matsuo, A., Kindo, K., Avdeev, M., Jeschke, H.O., Tanaka, H.

Physical Review B 100 ( 6 ) 2019年

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