Slow spin-glass and fast spin-liquid components in quasi-two-dimensional La2(Cu,Li)O4 -: art. no. 184401

被引：10

作者：

Chen, Y

Bao, W ^{[1
]}

Qiu, Y

Lorenzo, JE

Sarrao, JL

Ho, DL

Lin, MY

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[3] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[4] CNR, F-38043 Grenoble, France

[5] ExxonMobil Res & Engn Co, Annandale, NJ 08801 USA

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.72.184401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In conventional spin glasses, magnetic interaction is not strongly anisotropic and the entire spin system is believed to be frozen below the spin-glass transition temperature. In La2Cu0.94Li0.06O4, for which the in-plane exchange interaction dominates the interplane one, only a fraction of spins with antiferromagnetic correlations extending to neighboring planes become spin glass. The remaining spins with only in-plane antiferromagnetic correlations remain spin liquid at low temperature. Such a partial spin freezing out of a two-dimensional spin liquid observed in this cold neutron scattering study is likely due to a delicate balance between disorder and quantum fluctuations in the quasi-two-dimensional S=1/2 Heisenberg system.

引用

页数：6

共 44 条

[1] Novel dynamic scaling regime in hole-doped La2CuO4 -: art. no. 127005 [J].