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SUMMARY:Multiparticle Interference in Electronic Mach-Zehnder Interferomet
 ers - Dr Dmitry Kovrizhin\, University of Oxford
DTSTART:20090219T141500Z
DTEND:20090219T154500Z
UID:TALK15753@talks.cam.ac.uk
CONTACT:Joe Bhaseen
DESCRIPTION:Electronic Mach-Zehnder interferometers were constructed\nrece
 ntly from chiral one-dimensional integer quantum Hall edge states. These i
 nterferometers showed an unexpected behavior of the visibility of Aharonov
 -Bohm (AB) oscillations in the nonlinear regime\, where the visibility dev
 eloped a lobe structure accompanied by the $pi$-jumps of the AB-phase [1].
  We address these phenomena by studying the model of a Mach-Zehnder interf
 erometer\, where the one-dimensional electrons\ninteract via long-range po
 tential. We calculate exactly the visibility of the Aharonov-Bohm oscillat
 ions in this model\, which agrees well with experimental results.\n\n[1] "
 Unexpected Behavior in a Two-Path Electron Interferometer"\, \nI. Neder\, 
 M. Heiblum\, Y. Levinson\, D. Mahalu\, and V. Umansky\, \nPhys. Rev. Lett.
  96\, 016804\, (2006)
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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