Photon-assisted electronic and spin transport through two T-shaped three-quantum-dot molecules embedded in an Aharonov-Bohm interferometer |
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| Institution: | 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 |
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| Abstract: | 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. |
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| Keywords: | non-equilibrium Green's function photon-assisted electron transport Aharonov-Bohm interferometer Rashba spin-orbit coupling |
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