Theory of Current and Shot Noise Spectroscopy in Single-Molecular Quantum Dots with Phonon Mode

Details Theory of Current and Shot Noise Spectroscopy in Single-Molecular Quantum Dots with Phonon Mode Theory of Current and Shot Noise Spectroscopy in Single-Molecular Quantum Dots with Phonon Mode

2002-09-30

arxiv.org/abs/cond-mat/0210003v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 eps figures embedded

Scientific paper

10.1103/PhysRevB.67.165326

Using the Keldysh nonequilibrium Green function technique, we study the current and shot noise spectroscopy of a single molecular quantum dot coupled to a local phonon mode. It is found that in the presence of electron-phonon coupling, in addition to the resonant peak associated with the single level of the dot, satellite peaks with the separation set by the frequency of phonon mode appear in the differential conductance. In the ``single level'' resonant tunneling region, the differential shot noise power exhibit two split peaks. However, only single peaks show up in the ``phonon assisted'' resonant-tunneling region. An experimental setup to test these predictions is also proposed.

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