Dissipation and Tunnelling in Quantum Hall Bilayers

Details Dissipation and Tunnelling in Quantum Hall Bilayers Dissipation and Tunnelling in Quantum Hall Bilayers

2004-03-16

arxiv.org/abs/cond-mat/0403392v2

Phys. Rev. Lett 93, 126803 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.93.126803

We discuss the interplay between transport and intrinsic dissipation in quantum Hall bilayers, within the framework of a simple thought experiment. We compute, for the first time, quantum corrections to the semiclassical dynamics of this system. This allows us to re-interpret tunnelling measurements on these systems. We find a strong peak in the zero-temperature tunnelling current that arises from the decay of Josephson-like oscillations into incoherent charge fluctuations. In the presence of an in-plane field, resonances in the tunnelling current develop an asymmetric lineshape.

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