SKM 2023 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 46: Frustrated Magnets: Spin Liquids
TT 46.1: Vortrag
Donnerstag, 30. März 2023, 09:30–09:45, HSZ 201
Magnetic and elastic properties of spin ice materials in high magnetic fields — •Nan Tang1,2, Masaki Gen3, Mingxuan Fu2, Huiyuan Man4, Akira Matsuo5, Koichi Kindo5, Akihiko Ikeda5,6, Yasuhiro H. Matsuda5, Kazuyuki Matsuhira7, Yoshimitsu Kohama5, and Satoru Nakatsuji2,5 — 1Experimental Physics VI, Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany — 2Department of Physics, University of Tokyo, Tokyo, Japan — 3Riken Center for Emergent Matter Science, Saitama, Japan — 4Geballe Laboratory for Advanced Materials, Stanford University, California, U.S.A. — 5ISSP, University of Tokyo, Chiba, Japan — 6Department of Engineering Science, University of Electro-Communications, Tokyo, Japan — 7Department of Engineering, Kyushu Institute of Technology, Fukuoka, Japan
Spin ice is a prototypical state of frustrated magnets, in which Ising spins form a short-range "2-in, 2-out" correlation instead of a long-range order due to geometrical frustrations of pyrochlore lattice. Local Ising anisotropy induced by the competition between crystal electric field (CEF) effect and magnetic interactions play important roles to stabilize such spin-ice correlations. Generally, frustrated magnets show characteristic magnetostrictive responses and in this study, we measured both magnetization and magnetostriction of classical spin ice Ho2Ti2O7 and quantum spin ice Pr2Zr2O7 under high magnetic fields to explore the regime beyond the Ising limit. In the talk, we will discuss the influences of CEF splitting and exchange-striction on the magnetostrictive responses in the two spin ice materials.