Influence of Coulomb interaction on the Aharonov-Bohm effect in an electronic Fabry-Perot interferometer

Details Influence of Coulomb interaction on the Aharonov-Bohm effect in an electronic Fabry-Perot interferometer Influence of Coulomb interaction on the Aharonov-Bohm effect in an electronic Fabry-Perot interferometer

2011-06-22

arxiv.org/abs/1106.4440v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We study the role of Coulomb interaction in an electronic Fabry-Perot interferometer (FPI) realized with chiral edge states in the integer quantum Hall regime in the limit of weak backscattering. Assuming that a compressible Coulomb island in a bulk region of the FPI is formed, we develop a capacitance model which explains the plethora of experimental data on the flux and gate periodicity of conductance oscillations. It is also shown that a suppression of finite-bias visibility stems from a combination of weak Coulomb blockade and a nonequilibrium dephasing by the quantum shot noise.

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