63,65Cu NMR study of low-frequency spin dynamics in the infinite-layer antiferromagnetic compound SrCuO2

被引:0
|
作者
Mikhalev, KN [1 ]
Rebrin, SO
Gerashchenko, AP
D'yachkova, TV
机构
[1] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620219, Russia
[2] Russian Acad Sci, Inst Solid State Chem, Ural Div, Ekaterinburg 620219, Russia
基金
俄罗斯基础研究基金会;
关键词
D O I
10.1134/1.1846115
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The spin-lattice and spin-spin relaxation times have been measured for Cu-63,Cu-65 NMR in the infinite-layer antiferromagnet SrCuO2 in the ordered state for temperatures from 4.2 to 361 K. In the region of low temperatures (T less than or equal to 250 K), both relaxation processes are of the same nature and the main contribution to the relaxation rate is associated with the diffusion of a small number of holes with an activation energy of similar to42 meV. In the high-temperature range (T > 250 K), contributions to the transverse relaxation rate exhibit redistribution and this relaxation process is determined predominantly by indirect interactions. (C) 2004 MAIK "Nauka / Interperiodica".
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页码:540 / 543
页数:4
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