STAGGERED SPIN SUSCEPTIBILITY IN YBA2CU3O6.98 AND YBA2CU4O8 OBSERVED BY CU NUCLEAR SPIN-SPIN RELAXATION

被引：15

作者：

ITOH, Y ^{[1
]}

机构：

[1] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1994年 / 63卷 / 09期

关键词：

HIGH T-C SUPERCONDUCTOR; NUCLEAR SPIN-SPIN RELAXATION; SPIN FLUCTUATIONS; ANTIFERROMAGNETIC CORRELATION;

D O I：

10.1143/JPSJ.63.3522

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The temperature (T) dependence of the static staggered spin susceptibility X(Q) for the high T-c Cu oxides, YBa2Cu3O6.98 and YBa2Cu4O8, extracted from the Cu nuclear spin-spin relaxation measurements is discussed. The self-consistent-renormalization (SCR) calculation for a two dimensional antiferromagnetic Fermi liquid well reporoduces the experimental Curie-Weiss-type T-dependence of chi(Q), but the random-phase-approximation does not. This shows that the Curie-Weiss-type chi(Q) of the high T-c Cu oxides results from the SCR spin fluctuations at finite temperatures but not from the strong nesting of the Fermi surface.

引用

页码：3522 / 3527

页数：6