Muon spin relaxation in a spin glass CuMn observed in finite longitudinal magnetic fields |
| |
| Authors: | Y.J. Uemura K. Nishiyama T. Yamazaki R. Nakai |
| |
| Affiliation: | Department of Physics, University of Tokyo, 7-3-1-Hongo, Bunkyo-ku, Tokyo 113, Japan |
| |
| Abstract: | Muon spin depolarization in a spin glass CuMn (1.1 at.%, Tg = 10.8 K) has been observed in longitudinal external magnetic fields HL = 0–640 Oe. The depolarization rate did not depend on HL at T > Tg, reflecting a fast dynamical fluctuation of Mn moments. In contrast, a remarkable field dependence was observed below Tg. Static and dynamical local fields on μ+ from Mn moments were found to coexist at T ～ 0.9 Tg. The results suggested a rapid change of spin dynamics around Tg. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
