Regensburg 2007 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 28: Transport - Poster Session
TT 28.48: Poster
Donnerstag, 29. März 2007, 14:00–17:45, Poster A
Transport in Nanomechanical Nonlinear Oscillators — •Hannes Huebener1 and Tobias Brandes2 — 1I. Institut für Theoretische Physik, Universität Hamburg — 2Institut für Theoretische Physik, TU Berlin
We solve the model of a nanomechanical oscillator in the nonlinear potential created by the image charges of an additional transport electron. This system shows level anticrossing in the eigenvalue spectrum as a function of its frequency. We use the Franck-Condon principle to calculate the transition rates from leads to the oscillator. Under damping conditions we find rich behaviour even in a two-level approximation. We present results for transport properties of the system based on Master equations and Wigner function representations.