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Temperature dependence of polaronic transport through single molecules and quantum dots
Mon, 06/22/2009 - 13:42 — admin
| Title | Temperature dependence of polaronic transport through single molecules and quantum dots |
| Publication Type | Journal Article |
| Year of Publication | 2002 |
| Authors | Lundin, U., and McKenzie Ross H. |
| Journal | Physical Review B |
| Volume | 66 |
| Issue | 7 |
| Pagination | - |
| Abstract | 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. |
| DOI | 10.1103/PhysRevB.66.075303 |