Spin Current Through Triple Quantum Dot in the Presence of Rashba Spin-Orbit Interaction

A spin device with three normal metal leads via triple quantum dot in the presence of Rashba spin-orbit interaction is proposed, which is free from magnetic field or magnetic material. Using nonequilibrium Green＇s function technique, we investigate the spin current through the three-quantum-dot devi...

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Bibliographic Details
Published inChinese physics letters Vol. 27; no. 5; pp. 216 - 219
Main Author 李金亮 李玉现
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.05.2010
Subjects
库仑相互作用
旋转装置
格林函数方法
磁性物质
自旋电流
自旋轨道相互作用
量子点器件
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Summary:A spin device with three normal metal leads via triple quantum dot in the presence of Rashba spin-orbit interaction is proposed, which is free from magnetic field or magnetic material. Using nonequilibrium Green＇s function technique, we investigate the spin current through the three-quantum-dot device. It is found that the spin current can be affected by the strength of the Rashba spin-orbit interaction, Coulomb interaction, the energy of the quantum dot and the bias voltage of the lead. The periodic oscillation of spin current can be controlled by tuning the Rashba spin-orbit interaction.
Bibliography:TN409
11-1959/O4
O572.34
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/27/5/057202