Thermospin effects in parallel coupled double quantum dots in the presence of the Rashba spin-orbit interaction and Zeeman splitting  

作　　者：薛惠杰 吕天全 张红晨 尹海涛 催莲 贺泽龙 

机构地区：[1]Department of physics,Center for Condensed Matter Science and Technology,Harbin Institute of Technology [2]Heilongjiang Key Laboratory for Low Dimensional and Mesoscopic Physics,School of Physics and Electronic Engineering,Harbin Normal University [3]Space Materials and Environment Engineering Laboratory,Harbin Institute of Technology

出　　处：《Chinese Physics B》2012年第3期371-378,共8页中国物理B（英文版）

基　　金：Project supported by the Natural Science Foundation of Heilongjiang Province,China (Grant No. F200939)

摘　　要：The thermoelectric and the thermospin transport properties, including electrical conductivity, Seebeck coefficient, thermal conductivity, and thermoelectric figure of merit, of a parallel coupled double-quantum-dot Aharonov-Bohm interferometer are investigated by means of the Green function technique. The periodic Anderson model is used to describe the quantum dot system, the Rashba spin-orbit interaction and the Zeeman splitting under a magnetic field are considered. The theoretical results show the constructive contribution of the Rashba effect and the influence of the magnetic field on the thermospin effects. We also show theoretically that material with a high figure of merit can be obtained by tuning the Zeeman splitting energy only.The thermoelectric and the thermospin transport properties, including electrical conductivity, Seebeck coefficient, thermal conductivity, and thermoelectric figure of merit, of a parallel coupled double-quantum-dot Aharonov-Bohm interferometer are investigated by means of the Green function technique. The periodic Anderson model is used to describe the quantum dot system, the Rashba spin-orbit interaction and the Zeeman splitting under a magnetic field are considered. The theoretical results show the constructive contribution of the Rashba effect and the influence of the magnetic field on the thermospin effects. We also show theoretically that material with a high figure of merit can be obtained by tuning the Zeeman splitting energy only.

关 键 词：thermospin effect spin Seebeck coefficient Zeeman splitting Rashba spin-orbit inter-action 

分 类 号：O469[理学—凝聚态物理]