Spin Current and Shot Noise in Single-Molecule Quantum Dots with a Phonon Mode

Details Spin Current and Shot Noise in Single-Molecule Quantum Dots with a Phonon Mode Spin Current and Shot Noise in Single-Molecule Quantum Dots with a Phonon Mode

2005-09-08

arxiv.org/abs/cond-mat/0509197v1

Physical Review B 72, 075351 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

17 pages,5 figures

Scientific paper

10.1103/PhysRevB.72.075351

In this paper we investigate the spin-current and its shot-noise spectrum in a single-molecule quantum dot coupled with a local phonon mode. We pay special attention on the effect of phonon on the quantum transport property. The spin-polarization dependent current is generated by a rotating magnetic filed applied in the quantum dot. Our results show the remarkable influence of phonon mode on the zero-frequency shot noise. The electron-phonon interaction leads to sideband peaks which are located exactly on the integer number of the phonon frequency and moreover the peak-height is sensitive to the electron-phonon coupling.

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