Quantum Shuttle in Phase Space

Details Quantum Shuttle in Phase Space Quantum Shuttle in Phase Space

2003-01-23

arxiv.org/abs/cond-mat/0301441v2

Phys. Rev. Lett. 90 (25), 256801(2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures; minor changes; final version published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.90.256801

We present a quantum theory of the shuttle instability in electronic transport through a nanostructure with a mechanical degree of freedom. A phase space formulation in terms of the Wigner function allows us to identify a cross-over from the tunnelling to the shuttling regime, thus extending the previously found classical results to the quantum domain. Further, a new dynamical regime is discovered, where the shuttling is driven exclusively by the quantum noise.

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