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Influence of electron-phonon interaction on the properties of transport through double quantum dot with ferromagnetic leads |
Luo Kan (罗侃), Wang Fa-Qiang (王发强), Liang Rui-Sheng (梁瑞生), Ren Zhen-Zhen (任珍珍) |
Laboratory of Nanophotonic Functional Materials and Devices (SIPSE), and Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China |
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Abstract Electronic transport through a vibrating double quantum dot (DQD) in contact with noncollinear ferromagnetic (FM) leads is investigated. The state transition between the two dots of the DQD is excited by an AC microwave driving field. The corresponding currents and differential conductance are calculated in the Coulomb blockade regime by means of the Born-Markov master equation. It is shown that the interplay between electrons and phonons gives rise to phonon-assisted tunneling resonances and Franck-Condon blockade under certain conditions. In noncollinear magnetic configurations, spin-blockade effects are also observed, and the angle of polarization has some influence on the transport characteristics.
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Received: 22 April 2014
Revised: 22 May 2014
Accepted manuscript online:
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PACS:
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71.38.-k
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(Polarons and electron-phonon interactions)
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72.25.-b
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(Spin polarized transport)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61275059). |
Corresponding Authors:
Wang Fa-Qiang
E-mail: fqwang@scnu.edu.cn
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About author: 71.38.-k; 72.25.-b |
Cite this article:
Luo Kan (罗侃), Wang Fa-Qiang (王发强), Liang Rui-Sheng (梁瑞生), Ren Zhen-Zhen (任珍珍) Influence of electron-phonon interaction on the properties of transport through double quantum dot with ferromagnetic leads 2014 Chin. Phys. B 23 107103
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