29Si NMR spin-echo decay in YbRh2Si2

TMU International Symposium on "New Quantum Phases Emerging from Novel Crystal Structure"

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

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

319-1195, Japan^1

SPSMS/CEA-Grenoble, Grenoble

38000, France^2

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

192-0397, Japan^3

Physics Department, University of Michigan, Ann Arbor

MI

48109, United States^4

关键词: 29Si NMR;    Applied field;    Applied magnetic fields;    Nuclear Magnetic Resonance (NMR);    Oscillation frequency;    Single crystal samples;    Spin echo;    YbRh2Si2;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/683/1/012006/pdf
DOI  :  10.1088/1742-6596/683/1/012006

来源: IOP

【 摘 要 】

29Si nuclear magnetic resonance (NMR) has been measured in a29Si-enriched single crystal sample of YbRh2Si2. The spin-echo decay for applied field H ,the c-axes has been measured at 100 K. A clear spin-echo decay oscillation is observed for both cases, possibly reflecting the Ruderman-Kittel (RK) interaction. Since the observed oscillation frequency depends on the direction of applied magnetic field, anisotropic RK coupling and pseudo-dipolar (PD) interactions may not be negligible in this compound. The origin of spin-echo decay oscillations is discussed.