Magnetic properties of a mixed spin-1/2 and spin-3/2 Ising model with an uniaxial and biaxial crystal-field potential

被引：28
|
作者：
Jascur, M [1 ]
Strecka, J [1 ]
机构：
[1] Safarik Univ, Fac Sci, Dept Theoret Phys & Astrophys, Kosice 04154, Slovakia
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2005年 / 358卷 / 2-4期
关键词：
uniaxial and biaxial crystal-field potential; star-triangle transformation; spin dynamics; exact solution;
D O I：
10.1016/j.physa.2005.07.010
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Magnetic properties of a mixed spin-1/2 and spin-3/2 Ising model on honeycomb lattice are investigated within the framework of an exact star-triangle mapping transformation. The particular attention is focused on the effect of uniaxial and biaxial crystal-field potentials that basically influence a magnetic behavior of the spin-3/2 atoms. Our results for basic thermodynamic quantities as well as dynamical time-dependent autocorrelation function indicate a spin tunneling between vertical bar +/- 3/2 > and vertical bar -/+ 1/2 > states in two different magnetically ordered phases OP1 and OP2, respectively. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：393 / 412
页数：20
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