The tricritical point in the quantum Ising S=1 spin glass with biaxial crystal-field effects

被引：16

作者：

Domanski, Z ^{[1
]}

Kopec, TK

机构：

[1] Univ Lausanne, Inst Theoret Phys, CH-1015 Lausanne, Switzerland

[2] Czestochowa Tech Univ, Inst Math & Comp Sci, PL-42200 Czestochowa, Poland

[3] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2000年 / 12卷 / 26期

关键词：

D O I：

10.1088/0953-8984/12/26/318

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We study a quantum generalization of the infinite-range Sherrington-Kirkpatrick spin-glass model with biaxial crystal-field effects described by two uniaxial anisotropy parameters D-x and D-y. For spin dimensionality S = 1 we report an analytical and numerical analysis in the (T, D-x, D-y) parameter space (with T being the temperature). For D = D-x = D-y the model effectively becomes classical and identical with the crystal-field-split spin-glass Ising model (introduced by Ghatak and Sherrington) showing a discontinuous phase transition to the spin-glass phase on a portion of the T-D line.

引用

页码：5727 / 5734

页数：8

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