SPIN SUSCEPTIBILITY AND SPIN DYNAMICS AT CU SITES IN YBA2CU4O8

被引：43

作者：

ZIMMERMANN, H

MALI, M

MANGELSCHOTS, I

ROOS, J

PAULI, L

BRINKMANN, D

KARPINSKI, J

RUSIECKI, S

KALDIS, E

机构：

[1] SWISS FED INST TECHNOL,FESTKORPERPHYS LAB,CH-8093 ZURICH,SWITZERLAND

[2] IBM CORP,RES LAB ZURICH,CH-8803 RUSCHLIKON,SWITZERLAND

来源：

JOURNAL OF THE LESS-COMMON METALS | 1990年 / 164卷

关键词：

D O I：

10.1016/0022-5088(90)90207-Z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

New measurements of the Knight shift tensor K at both Cu sites in the normal conducting state of the 82 K superconductor 1-2-4 are reported. The data are in accordance with a picture where at both Cu sites the Cu valence is close to 2+ and the hole on the plane site is quasi-localized. A significant temperature dependence at plane Cu site is found which is associated with temperature dependent antiferromagnetic fluctuations. Knight shift and spin-lattice relaxation times at Cu plane site are interpreted to be dominated by antiferromagnetic correlations with a temperature dependent correlation length. © 1990.

引用

页码：138 / 145

页数：8

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