Zhou Ben-Liang et al 2008 Chinese Phys. Lett. 25 722 doi:10.1088/0256-307X/25/2/100
Zhou Ben-Liang1, Liao Wen-Hu1 and Zhou Guang-Hui1,2
Show affiliationsWe theoretically investigate the electrical transport property of a quantum dot with longitudinal optical phonons. The conductance through the dot connected to two leads is calculated by the nonequilibrium Green function within the Landauer—Büttiker framework. The numerical examples of the conductance with different electron—phonon coupling strengths show that the presence of a phonon field typically results in the suppression of the main peak accompanied by some phonon side peaks. Both the main peak and the side peaks are sensitive to the electron—phonon coupling strength, which is related to temperature. Our results for this system are consistent with some related previous works but the calculation is comparatively simple.
63.22.-m Phonons or vibrational states in low-dimensional structures and nanoscale materials
Issue 2 (February 2008)
Received 7 June 2007
Zhou Ben-Liang et al 2008 Chinese Phys. Lett. 25 722
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