Temperature dependence of polaronic transport through single molecules and quantum dots

Article

关键词: INELASTIC-SCATTERING;    SPONTANEOUS EMISSION;    ELECTRON-TRANSPORT;    BAND;   

DOI  :  10.1103/PhysRevB.66.075303

来源: SCIE

【 摘 要 】

Motivated by recent experiments on electric transport through single molecules and quantum dots, we investigate a model for transport that allows for significant coupling between the electrons and a boson mode isolated on the molecule or dot. We focus our attention on the temperature-dependent properties of the transport. In the Holstein picture for polaronic transport in molecular crystals the temperature dependence of the conductivity exhibits a crossover from coherent (band) to incoherent (hopping) transport. Here, the temperature dependence of the differential conductance on resonance does not show such a crossover, but is mostly determined by the lifetime of the resonant level on the molecule or dot.

【 授权许可】

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