ISING SPIN-GLASS IN A TRANSVERSE MAGNETIC-FIELD

被引：23

作者：

BOECHAT, B ^{[1
]}

DOSSANTOS, R ^{[1
]}

CONTINENTINO, MA ^{[1
]}

机构：

[1] UNIV FED FLUMINENSE,INST FIS,BR-24210 NITEROI,BRAZIL

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.49.6404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the three-dimensional quantum Ising spin glass in a transverse magnetic field following the evolution of the bond probability distribution under renormalization-group transformations. The phase diagram (critical temperature T(c) vs transverse field GAMMA) we obtain shows a finite slope near T = 0, in contrast with the infinite slope for the pure case. Our results compare very well with the experimental data recently obtained for the dipolar Ising spin glass LiHo0.167Y0.833F4, in a transverse field. This indicates that this system is more appropriately described by a model with short-range interactions than by an equivalent Sherrington-Kirkpatrick model in a transverse field.

引用

页码：6404 / 6407

页数：4