Reference : Transport properties of double quantum dots with electron-phonon coupling
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Transport properties of double quantum dots with electron-phonon coupling
Walter, Stefan [> >]
Trauzettel, Björn [> >]
Schmidt, Thomas mailto [University of Basel > Department of Physics]
Phys. Rev. B
[en] 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 interdot 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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