Litvin, Leonid and Helzel, Andreas and Tranitz, Hans-Peter and Wegscheider, Werner and Strunk, Christoph (2008) Two beam Aharonov–Bohm interference in the integer quantum Hall regime. Physica E Low-dimensional Systems and Nanostructures 40 (5), pp. 1706-1708.
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We study an electronic Mach–Zehnder interferometer employing the edge channels of a two-dimensional electron gas (2DEG) in the quantum Hall regime and quantum point contacts (QPC) as beam splitters. The linear conductance of the QPC as a function of gate voltage shows resonances superimposed on quantized conductance steps. It was found that the visibility depends strongly on magnetic field and is highest near a filling factor of 1.5 in the interferometer arm.
|Institutions:|| Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk
|Keywords:||Electron interference; Quantum point contact; Quantum Hall effect|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||01 Feb 2010 12:58|
|Last Modified:||20 Jul 2011 22:18|