Photon-assisted electronic and spin transport through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm interferometer

doi:10.1088/1674-1056/26/11/117302

中国物理B ›› 2017, Vol. 26 ›› Issue (11): 117302-117302.doi: 10.1088/1674-1056/26/11/117302

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Photon-assisted electronic and spin transport through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm interferometer

Jiyuan Bai(白继元), Li Li(李立), Zelong He(贺泽龙), Shujiang Ye(叶树江), Shujun Zhao(赵树军), Suihu Dang(党随虎), Weimin Sun(孙伟民)

1. Key Laboratory of In-fiber Integrated Optics of Ministry of Education, College of Science, Harbin Engineering University, Harbin 150001, China;
2. School of Electronic and Information Engineering, Yangtze Normal University, Chongqing 408003, China;
3. School of Electrical and Information Engineering, Heilongjiang Institute of Technology, Harbin 150050, China

收稿日期:2017-06-29 修回日期:2017-08-07 出版日期:2017-11-05 发布日期:2017-11-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11447132 and 11504042), the Natural Science Foundation of Heilongjiang, China (Grant No. A201405), 111 Project to Harbin Engineering University, China (Grant No. B13015), Chongqing Science and Technology Commission Project, China (Grant Nos. cstc2014jcyjA00032 and cstc2016jcyjA1158), and Scientific Research Project for Advanced Talents of Yangtze Normal University, China (Grant No. 2017KYQD09).

Photon-assisted electronic and spin transport through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm interferometer

Jiyuan Bai(白继元)^1,3, Li Li(李立)¹, Zelong He(贺泽龙)², Shujiang Ye(叶树江)³, Shujun Zhao(赵树军)³, Suihu Dang(党随虎)², Weimin Sun(孙伟民)¹

1. Key Laboratory of In-fiber Integrated Optics of Ministry of Education, College of Science, Harbin Engineering University, Harbin 150001, China;
2. School of Electronic and Information Engineering, Yangtze Normal University, Chongqing 408003, China;
3. School of Electrical and Information Engineering, Heilongjiang Institute of Technology, Harbin 150050, China

Received:2017-06-29 Revised:2017-08-07 Online:2017-11-05 Published:2017-11-05
Contact: Li Li, Zelong He E-mail:lylee_heu@hrbeu.edu.cn;hrbhzl@126.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11447132 and 11504042), the Natural Science Foundation of Heilongjiang, China (Grant No. A201405), 111 Project to Harbin Engineering University, China (Grant No. B13015), Chongqing Science and Technology Commission Project, China (Grant Nos. cstc2014jcyjA00032 and cstc2016jcyjA1158), and Scientific Research Project for Advanced Talents of Yangtze Normal University, China (Grant No. 2017KYQD09).

摘要/Abstract

摘要：

We investigate the time-modulated electronic and spin transport properties through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm (A-B) interferometer. By using the Keldysh non-equilibrium Green's function technique, the photon-assisted spin-dependent average current is analyzed. The T-shaped three-quantum-dot molecule A-B interferometer exhibits excellent controllability in the average current resonance spectra by adjusting the interdot coupling strength, Rashba spin-orbit coupling strength, magnetic flux, and amplitude of the time-dependent external field. Efficient spin filtering and multiple electron-photon pump functions are exploited in the multi-quantum-dot molecule A-B interferometer by a time-modulated external field.

关键词: non-equilibrium Green's function, photon-assisted electron transport, Aharonov-Bohm interferometer, Rashba spin-orbit coupling

Abstract:

Key words: non-equilibrium Green's function, photon-assisted electron transport, Aharonov-Bohm interferometer, Rashba spin-orbit coupling

中图分类号: (Electronic transport in nanoscale materials and structures)

73.63.-b

73.23.-b (Electronic transport in mesoscopic systems) 05.60.Gg (Quantum transport)

白继元, 李立, 贺泽龙, 叶树江, 赵树军, 党随虎, 孙伟民. Photon-assisted electronic and spin transport through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm interferometer[J]. 中国物理B, 2017, 26(11): 117302-117302.

Jiyuan Bai(白继元), Li Li(李立), Zelong He(贺泽龙), Shujiang Ye(叶树江), Shujun Zhao(赵树军), Suihu Dang(党随虎), Weimin Sun(孙伟民). Photon-assisted electronic and spin transport through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm interferometer[J]. Chin. Phys. B, 2017, 26(11): 117302-117302.

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Photon-assisted electronic and spin transport through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm interferometer

Photon-assisted electronic and spin transport through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm interferometer

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