研究者詳細 - JESCHKE HARALD OLAF

論文 - JESCHKE HARALD OLAF

分割表示 192 件中 1 - 20 件目／全件表示 >>

Multipolar ordering from dynamical mean field theory with application to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>CeB</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:math>

Junya Otsuki, Kazuyoshi Yoshimi, Hiroshi Shinaoka, Harald O. Jeschke

Physical Review B 110 ( 3 ) 2024年7月

Spin-orbital ordering in alkali superoxides

Kohei Shibata, Makoto Naka, Harald O. Jeschke, Junya Otsuki

Physical Review B 109 ( 23 ) 2024年6月

Magnetic fluctuations in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Pb</mml:mi><mml:mn>9</mml:mn></mml:msub><mml:mi>Cu</mml:mi><mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:msub><mml:mi>PO</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:mo>)</mml:mo></mml:mrow><mml:mn>6</mml:mn></mml:msub><mml:mi mathvariant="normal">O</mml:mi></mml:mrow></mml:math>

Makoto Shimizu, Junya Otsuki, Harald O. Jeschke

Physical Review B 108 ( 20 ) 2023年11月

Breathing pyrochlore magnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>CuGaCr</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">S</mml:mi><mml:mn>8</mml:mn></mml:msub></mml:mrow></mml:math> : Magnetic, thermodynamic, and dielectric properties

Masaki Gen, Hajime Ishikawa, Atsushi Miyake, Takeshi Yajima, Harald O. Jeschke, Hajime Sagayama, Akihiko Ikeda, Yasuhiro H. Matsuda, Koichi Kindo, Masashi Tokunaga, Yoshimitsu Kohama, Takashi Kurumaji, Yusuke Tokunaga, Taka-hisa Arima

Physical Review Materials 7 ( 10 ) 2023年10月

Pressure evolution of electronic structure and magnetism in the layered van der Waals ferromagnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>CrGeTe</mml:mi></mml:mrow><mml:mn>3</mml:mn></mml:msub></mml:math>

Han-Xiang Xu, Makoto Shimizu, Daniel Guterding, Junya Otsuki, Harald O. Jeschke

Physical Review B 108 ( 12 ) 2023年9月

Signatures of a magnetic superstructure phase induced by ultrahigh magnetic fields in a breathing pyrochlore antiferromagnet

Masaki Gen, Akihiko Ikeda, Kazushi Aoyama, Harald O. Jeschke, Yuto Ishii, Hajime Ishikawa, Takeshi Yajima, Yoshihiko Okamoto, Xuguang Zhou, Daisuke Nakamura, Shojiro Takeyama, Koichi Kindo, Yasuhiro H. Matsuda, Yoshimitsu Kohama

Proceedings of the National Academy of Sciences 120 ( 33 ) 2023年8月

掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of the National Academy of Sciences

The mutual coupling of spin and lattice degrees of freedom is ubiquitous in magnetic materials and potentially creates exotic magnetic states in response to the external magnetic field. Particularly, geometrically frustrated magnets serve as a fertile playground for realizing magnetic superstructure phases. Here, we observe an unconventional two-step magnetostructural transition prior to a half-magnetization plateau in a breathing pyrochlore chromium spinel by means of state-of-the-art magnetization and magnetostriction measurements in ultrahigh magnetic fields available up to 600 T. Considering a microscopic magnetoelastic theory, the intermediate-field phase can be assigned to a magnetic superstructure with a three-dimensional periodic array of 3-up-1-down and canted 2-up-2-down spin molecules. We attribute the emergence of the magnetic superstructure to a unique combination of the strong spin–lattice coupling and large breathing anisotropy.

DOI： 10.1073/pnas.2302756120

researchmap

Correlation between electronic structure and emergence of superconductivity in Bi2−xSbxTe3−ySey ( y∼1.2 ) studied by x-ray emission spectroscopy and density functional theory

Hitoshi Yamaoka, Harald O. Jeschke, Huan Li, Tong He, Naohito Tsujii, Nozomu Hiraoka, Hirofumi Ishii, Hidenori Goto, Yoshihiro Kubozono

Physical Review B 2023年7月

Synthesis and anisotropic magnetic properties of LiCrTe 2 single crystals with a triangular-lattice antiferromagnetic structure

Catherine Witteveen, Elisabetta Nocerino, Sara A López-Paz, Harald O Jeschke, Vladimir Y Pomjakushin, Martin Månsson, Fabian O von Rohr

Journal of Physics: Materials 2023年7月

CrRhAs: a member of a large family of metallic kagome antiferromagnets

Y. N. Huang, Harald O. Jeschke, Igor I. Mazin

npj Quantum Materials 2023年6月

Magnetic excitation spectrum and Hamiltonian of the quantum spin chain compound BaCuTe2O6

A. Samartzis, S. Chillal, H. O. Jeschke, D. J. Voneshen, Z. Lu, A. T. M. N. Islam, B. Lake

Physical Review B 2023年5月

Increased localization of Majorana modes in antiferromagnetic chains on superconductors

Harald O. Jeschke

Physical Review B 2023年

Majorana modes with side features in magnet-superconductor hybrid systems

Daniel Crawford, Eric Mascot, Makoto Shimizu, Philip Beck, Jens Wiebe, Roland Wiesendanger, Harald O. Jeschke, Dirk K. Morr, Stephan Rachel

npj Quantum Materials 2022年12月

Birchite Cd2Cu2(PO4)2SO4·5H2O as a model antiferromagnetic spin-1/2 Heisenberg J1−J2 chain

Masayoshi Fujihala, Harald O. Jeschke, Katsuhiro Morita, Tomohiko Kuwai, Akihiro Koda, Hirotaka Okabe, Akira Matsuo, Koichi Kindo, Setsuo Mitsuda

Physical Review Materials 2022年11月

Anomalously large spin-dependent electron correlation in the nearly half-metallic ferromagnet CoS2

Hirokazu Fujiwara, Kensei Terashima, Junya Otsuki, Nayuta Takemori, Harald O. Jeschke, Takanori Wakita, Yuko Yano, Wataru Hosoda, Noriyuki Kataoka, Atsushi Teruya, Masashi Kakihana, Masato Hedo, Takao Nakama, Yoshichika Ōnuki, Koichiro Yaji, Ayumi Harasawa, Kenta Kuroda, Shik Shin, Koji Horiba, Hiroshi Kumigashira, Yuji Muraoka, Takayoshi Yokoya

Physical Review B 106 ( 8 ) 2022年8月

Phase diagram of a distorted kagome antiferromagnet and application to Y-kapellasite

Max Hering, Francesco Ferrari, Aleksandar Razpopov, Igor I. Mazin, Roser Valentí, Harald O. Jeschke, Johannes Reuther

npj Computational Materials 2022年1月

Antiferromagnetic spin fluctuations and superconductivity in NbRh2B2 and TaRh2B2 with a chiral crystal structure

Kazuaki Matano, Ryo Ogura, Mateo Fountaine, Harald O. Jeschke, Shinji Kawasaki, Guo-qing Zheng

Physical Review B 104 ( 22 ) 2021年12月

Field-tunable toroidal moment in a chiral-lattice magnet

Lei Ding, Xianghan Xu, Harald O. Jeschke, Xiaojian Bai, Erxi Feng, Admasu Solomon Alemayehu, Jaewook Kim, Fei-Ting Huang, Qiang Zhang, Xiaxin Ding, Neil Harrison, Vivien Zapf, Daniel Khomskii, Igor I. Mazin, Sang-Wook Cheong, Huibo Cao

Nature Communications 12 ( 1 ) 2021年12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：Nature Research

Ferrotoroidal order, which represents a spontaneous arrangement of toroidal moments, has recently been found in a few linear magnetoelectric materials. However, tuning toroidal moments in these materials is challenging. Here, we report switching between ferritoroidal and ferrotoroidal phases by a small magnetic field, in a chiral triangular-lattice magnet BaCoSiO4 with tri-spin vortices. Upon applying a magnetic field, we observe multi-stair metamagnetic transitions, characterized by equidistant steps in the net magnetic and toroidal moments. This highly unusual ferri-ferroic order appears to come as a result of an unusual hierarchy of frustrated isotropic exchange couplings revealed by first principle calculations, and the antisymmetric exchange interactions driven by the structural chirality. In contrast to the previously known toroidal materials identified via a linear magnetoelectric effect, BaCoSiO4 is a qualitatively new multiferroic with an unusual coupling between several different orders, and opens up new avenues for realizing easily tunable toroidal orders.

DOI： 10.1038/s41467-021-25657-6

Scopus

PubMed

researchmap

Theory for doping trends in titanium oxypnictide superconductors

Han-Xiang Xu, Daniel Guterding, Harald O. Jeschke

Physical Review B 2021年11月

Quantum spin fluctuations and hydrogen bond network in the antiferromagnetic natural mineral henmilite

Hajime Yamamoto, Terutoshi Sakakura, Harald O. Jeschke, Noriyuki Kabeya, Kanata Hayashi, Yuya Ishikawa, Yutaka Fujii, Shunji Kishimoto, Hajime Sagayama, Kei Shigematsu, Masaki Azuma, Akira Ochiai, Yukio Noda, Hiroyuki Kimura

Physical Review Materials 5 ( 10 ) 2021年10月

Magnetic Field Induced Quantum Spin Liquid in the Two Coupled Trillium Lattices of

Ivica Živković, Virgile Favre, Catalina Salazar Mejia, Harald O. Jeschke, Arnaud Magrez, Bhupen Dabholkar, Vincent Noculak, Rafael S. Freitas, Minki Jeong, Nagabhushan G. Hegde, Luc Testa, Peter Babkevich, Yixi Su, Pascal Manuel, Hubertus Luetkens, Christopher Baines, Peter J. Baker, Jochen Wosnitza, Oksana Zaharko, Yasir Iqbal, Johannes Reuther, Henrik M. Rønnow

Physical Review Letters 127 ( 15 ) 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

Quantum spin liquids are exotic states of matter that form when strongly frustrated magnetic interactions induce a highly entangled quantum paramagnet far below the energy scale of the magnetic interactions. Three-dimensional cases are especially challenging due to the significant reduction of the influence of quantum fluctuations. Here, we report the magnetic characterization of forming a three-dimensional network of spins. Using density functional theory calculations, we show that this network consists of two interconnected spin-1 trillium lattices. In the absence of a magnetic field, magnetization, specific heat, neutron scattering, and muon spin relaxation experiments demonstrate a highly correlated and dynamic state, coexisting with a peculiar, very small static component exhibiting a strongly renormalized moment. A magnetic field diminishes the ordered component and drives the system into a pure quantum spin liquid state. This shows that a system of interconnected trillium lattices exhibits a significantly elevated level of geometrical frustration.

DOI： 10.1103/PhysRevLett.127.157204

Scopus

researchmap

　前のページ - 次のページ　

<JESCHKE HARALD OLAF>

論文 - JESCHKE HARALD OLAF