Unidirectional heat current through a one-dimensional quantum spin heterostructure

被引：0
作者：
Han, Yu [1 ]
Li, Zhi-Chao [2 ]
Wang, Yan [2 ]
Gong, Wei-Jiang [2 ,3 ]
机构：
[1] Liaoning Univ, Dept Phys, Shenyang 110036, Peoples R China
[2] Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China
[3] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2013年 / 112卷 / 02期
基金：
中国国家自然科学基金;
关键词：
THERMAL-CONDUCTIVITY; CONDUCTANCE; TRANSPORT; CHAIN;
D O I：
10.1007/s00339-013-7811-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate thermal transport through a quantum spin- heterostructure, in which a semi-infinite chain with two-site isotropic XY interaction couples to the other semiinfinite chain with two-site isotropic XY interaction and three-site XZX+YZY interaction. By studying the dependence of the transmission ability on the model parameters, the linear and nonlinear thermal transport properties are discussed in detail. We find the rectification effects of the heat current in the case of different magnetic fields applied at the two chains; moreover, the unidirectional heat current is observed in the presence of appropriate structure parameters. With these results, we propose such a structure to be a promising candidate for heat current rectification.
引用
收藏
页码：255 / 262
页数：8
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