Possible Relationship between Cu-NQR Frequencies and Cu Valence States in CuO(2)-Planes for High-T(c) Superconductors

被引：5
作者：
Riesemeier, H. [1 ]
Gaertner, S. [1 ]
Mueller, V. [1 ]
Lueders, K. [1 ]
机构：
[1] Freie Univ Berlin, Inst Expt Phys, D-1000 Berlin, Germany
来源：
APPLIED MAGNETIC RESONANCE | 1992年 / 3卷 / 3-4期
关键词：
D O I：
10.1007/BF03166286
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
We report on (63)Cu-NQR frequency nu(NQR) measurements on various high-T(c) superconductors. An empifical relationship between T(c) and nu(NQR) is presented. We attribute this finding to variations in the valence state of the in-plane Cu ions which, due to the unusual electric polarizability of the O(2-) ions, depends sensitively on the Cu-O distance.
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页码：641 / 648
页数：8
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