Anisotropic magnetic fluctuations in YbRh2Si2

International Conference on Strongly Correlated Electron Systems 2014

Kambe, S.^1 ; Sakai, H.^1 ; Tokunaga, Y.^1 ; Lapertot, G.^2 ; Matsuda, T.D.^1,4 ; Knebel, G.^2 ; Flouquet, J.^2 ; Walstedt, R.E.^3

Advanced Science Research Center, Japan Atomic Energy Agency, Tokai-mura, Ibaraki

319-1195, Japan^1

Service de Physique Statistique, Magnétisme et Supraconductivité, Institut Nanosciences et Cryogénie, CEA-Grenoble/Université J. Fourier Grenoble i, 17 rue des Martyrs, Grenoble

38054, France^2

Physics Department, University of Michigan, Ann Arbor

MI

48109, United States^3

Division of Physics, Tokyo Metropolitan University, Hachioji-shi, Tokyo

192-0397, Japan^4

关键词: Applied field;    Low temperatures;    Magnetic fluctuation;    Nuclear Magnetic Resonance (NMR);    Single crystal samples;    Spin lattice relaxation rates;    Tetragonal symmetries;    YbRh2Si2;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012085/pdf
DOI  :  10.1088/1742-6596/592/1/012085

来源: IOP

【 摘 要 】

29Si nuclear magnetic resonance (NMR) has been measured in a29Si enriched single crystal sample of YbRh2Si2. The spin-lattice relaxation rate 1/T1for applied field Hthe c-axis is considerably different from that for H ⊥ the c-axis, reflecting the tetragonal symmetry of the compound. At low temperatures, in-plane magnetic fluctuations deduced from these 1/T1results are found to depend strongly on the direction of H, i.e. the in-plane magnetic fluctuations are suppressed for H ⊥ the c-axis compared to the case for Hthe c-axis, indicating that the electronic state is sensitive to the direction of H at low temperatures.