Faculty Profiles - JESCHKE HARALD OLAF

Papers - JESCHKE HARALD OLAF

Division display 1 - 20 of about 192 ／ All the affair displays >>

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 ) 2024.7

Spin-orbital ordering in alkali superoxides

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

Physical Review B 109 ( 23 ) 2024.6

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 ) 2023.11

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 ) 2023.10

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 ) 2023.9

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 ) 2023.8

Publishing type：Research paper (scientific journal) Publisher：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 2023.7

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 2023.7

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

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

npj Quantum Materials 2023.6

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 2023.5

Increased localization of Majorana modes in antiferromagnetic chains on superconductors

Harald O. Jeschke

Physical Review B 2023

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 2022.12

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 2022.11

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 ) 2022.8

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 2022.1

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 ) 2021.12

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 ) 2021.12

Language：English Publishing type：Research paper (scientific journal) Publisher：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 2021.11

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 ) 2021.10

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 ) 2021.10

Language：English Publishing type：Research paper (scientific journal) Publisher：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

　 PREV - NEXT 　

< JESCHKE HARALD OLAF >

Papers - JESCHKE HARALD OLAF