CL-35 NMR-STUDY OF SPIN DYNAMICS IN SR2CUO2CL2

被引：37

作者：

BORSA, F

CORTI, M

GOTO, T

RIGAMONTI, A

JOHNSTON, DC

CHOU, FC

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011

[2] UNIV PAVIA,DIPARTIMENTO FIS A VOLTA,I-27100 PAVIA,ITALY

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.45.5756

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of the Cl-35 nuclear-spin-lattice relaxation rate (NSLR) are reported for Sr2CuO2Cl2 around the antiferromagnetic transition temperature T(N) = 260 +/- 0.5 K. The temperature dependence of the Cu2+ spin correlation length xi(T) is obtained indirectly by using the conventional description of NSLR and scaling arguments and compared with the xi(T) obtained in La2CuO4 by neutron scattering. In both systems xi(T) follows the two-dimensional Heisenberg behavior renormalized by quantum fluctuations except close to T(N) where a crossover to a power-law T dependence is observed in Sr2CuO2Cl2.

引用

页码：5756 / 5759

页数：4

共 19 条

[1] MAGNETIC DYNAMICS OF LA2CUO4 AND LA2-XBAXCUO4 [J].

AEPPLI, G ;

HAYDEN, SM ;

MOOK, HA ;

FISK, Z ;

CHEONG, SW ;

RYTZ, D ;

REMEIKA, JP ;

ESPINOSA, GP ;

COOPER, AS .

PHYSICAL REVIEW LETTERS, 1989, 62 (17) :2052-2055

[2]

BENNER H, 1990, MAGNETIC PROPERTIES, P323

[3] SPIN CORRELATIONS IN THE 2-DIMENSIONAL S = 1 HEISENBERG-ANTIFERROMAGNET [J].

BIRGENEAU, RJ .

PHYSICAL REVIEW B, 1990, 41 (04) :2514-2516

[4] MAGNETIC CORRELATIONS AND LA-139 NQR RELAXATION IN LA2-XSRXCUO4-Y [J].

BORSA, F ;

CORTI, M ;

REGA, T ;

RIGAMONTI, A .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS, 1989, 11 (12) :1785-1804

[5]

BUCCI C, 1976, LOCAL PROPERTIES PHA, P624

[6] LOW-TEMPERATURE BEHAVIOR OF TWO-DIMENSIONAL QUANTUM ANTIFERROMAGNETS [J].