SPIN SUSCEPTIBILITY IN THE LA2-XSRXCUO4 SYSTEM FROM UNDERDOPED TO OVERDOPED REGIMES

被引：35

作者：

SONG, YQ

KENNARD, MA

POEPPELMEIER, KR

HALPERIN, WP

机构：

[1] NORTHWESTERN UNIV,SCI & TECHNOL CTR SUPERCONDUCT,EVANSTON,IL 60208

[2] NORTHWESTERN UNIV,DEPT CHEM,MAT RES CTR,EVANSTON,IL 60208

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.70.3131

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Cu-63 NMR Knight shifts were measured on La2-xSrxCuO4 for x=0.10, 0.16, and 0.20 in the normal and superconducting states. These results, combined with magnetic susceptibility measurements, allow the separation of the carrier spin and orbital contributions to the susceptibility. At temperatures just above the superconducting transition, the conduction electron spin susceptibility increases dramatically with strontium doping. The analysis of the Knight shift at low temperature suggests that the spin susceptibility is zero and the superconducting state is a spin singlet.

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页码：3131 / 3134

页数：4

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