Influence of electron-phonon interaction on the properties of transport through double quantum dot with ferromagnetic leads

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 calcu...

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Bibliographic Details
Published inChinese physics B Vol. 23; no. 10; pp. 447 - 457
Main Author 罗侃 王发强 梁瑞生 任珍珍
Format Journal Article
LanguageEnglish
Published 01.10.2014
Subjects
Blocking
Conductance
Contact
Differential equations
Electronics
Ferromagnetism
Mathematical analysis
Microwaves
Qunatum dots
Transport
声子
微分电导
性质
电子
相互作用
运输
量子点
铁磁电极
Online AccessGet full text
ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/23/10/107103

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Summary: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.
Bibliography: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.
Luo Kan, Wang Fa-Qiang, Liang Rui-Sheng, and Ren Zhen-Zhen（ Laboratory of Nanophotonic Functional Materials and Devices （SIPSE）, and Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China）
electron-phonon, spin-polarized transport, negative differential conductance
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/10/107103