Quantum dissipative effects on non-equilibrium transport through a single-molecular transistor: The Anderson-Holstein-Caldeira-Leggett model

The Anderson-Holstein model with Caldeira-Leggett coupling with environment is considered to describe the damping effect in a single molecular transistor (SMT) which comprises a molecular quantum dot (with electron-phonon interaction) mounted on a substrate (environment) and coupled to metallic elec...

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Bibliographic Details
Published inScientific reports Vol. 6; no. 1; p. 18511
Main Authors Raju, Ch. Narasimha, Chatterjee, Ashok
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 06.01.2016
Nature Publishing Group
Subjects
639/766/119/995
639/766/119/998
639/925/927/1007
Conductance
Humanities and Social Sciences
multidisciplinary
Quantum dots
Science
Temperature effects
Transistors
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Summary:The Anderson-Holstein model with Caldeira-Leggett coupling with environment is considered to describe the damping effect in a single molecular transistor (SMT) which comprises a molecular quantum dot (with electron-phonon interaction) mounted on a substrate (environment) and coupled to metallic electrodes. The electron-phonon interaction is first eliminated using the Lang-Firsov transformation and the spectral density function, charge current and differential conductance are then calculated using the non-equilibrium Keldysh Green function technique. The effects of damping rate and electron-electron and electron-phonon interactions on the transport properties of SMT are studied at zero temperature.
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ISSN:2045-2322
2045-2322
DOI:10.1038/srep18511