POLARON THEORY OF NUCLEAR-RELAXATION IN YBA2CU4O8 AND OTHER METAL-OXIDES

被引:28
作者
ALEXANDROV, AS [1 ]
机构
[1] MOSCOW ENGN PHYS INST, MOSCOW, USSR
来源
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1991年 / 182卷 / 4-6期
关键词
D O I
10.1016/0921-4534(91)90530-C
中图分类号
O59 [应用物理学];
学科分类号
摘要
One of the possible microscopic models of nuclear spin relaxation 1/T1 and of the Knight shift K in YBa2CuO8 proposed is based on a strong electron-phonon interaction, which forms a carged Bose-liquid of small bipolarons (SB). An explanation of the large value of 63(1/T1), the absence of the Hebel-Slichter peak, the non-Korringa temperature dependence with the rapid decrease of 1/T1 and K above K above T(c) and a quantitative agreement with experiment is achieved.
引用
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页码:327 / 332
页数:6
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