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arXiv · 1309.6729

Transport properties of double quantum dots with electron-phonon coupling

Stefan Walter·Björn Trauzettel·Thomas L. Schmidt
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Abstract

We study transport through a double quantum dot system in which each quantum dot is coupled to a phonon mode. Such a system can be realized, e.g., using a suspended carbon nanotube. We find that the interplay between strong electron-phonon coupling and inter-dot tunneling can lead to a negative differential conductance at bias voltages exceeding the phonon frequency. Various transport properties are discussed, and we explain the physics of the occurrence of negative differential conductance in this system.

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Stefan Walter, Björn Trauzettel, Thomas L. Schmidt. 2013-09-26. Transport properties of double quantum dots with electron-phonon coupling. https://doi.org/10.1103/physrevb.88.195425

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