Resonant dephasing in the electronic Mach-Zehnder interferometer

Details Resonant dephasing in the electronic Mach-Zehnder interferometer Resonant dephasing in the electronic Mach-Zehnder interferometer

2006-09-12

arxiv.org/abs/cond-mat/0609288v3

Phys. Rev. Lett. 99, 156801 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures; published version

Scientific paper

10.1103/PhysRevLett.99.156801

We address the recently-observed unexpected behavior of Aharonov-Bohm oscillations in the electronic Mach-Zehnder interferometer that was realized experimentally in a quantum Hall system [1]. We argue that the measured lobe structure in the visibility of oscillations and the phase rigidity result from a strong long-range interaction between two adjacent counter-propagating edge states, which leads to a resonant scattering of plasmons. The visibility and phase shift, which we expressed in terms of the transmission coefficient for plasmons, can be used for the tomography of edge states.

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