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Two beam Aharonov–Bohm interference in the integer quantum Hall regime

Litvin, Leonid, Helzel, Andreas, Tranitz, Hans-Peter, 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.

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Item type:Article
Date:March 2008
Institutions:Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk
Identification Number:
73.23.Ad; 73.63.NmPACS
Keywords:Electron interference; Quantum point contact; Quantum Hall effect
Dewey Decimal Classification:500 Science > 530 Physics
Created at the University of Regensburg:Unknown
Item ID:12474
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