Temperature dependence of the visibility in an electronic Mach–Zehnder interferometer

• Published in: Physica. E, Low-dimensional systems & nanostructures Vol. 42; no. 4; pp. 1091 - 1094
• Main Authors: Hashisaka, Masayuki, Helzel, Andreas, Nakamura, Shuji, Litvin, Leonid, Yamauchi, Yoshiaki, Kobayashi, Kensuke, Ono, Teruo, Tranitz, Hans-Peter, Wegscheider, Werner, Strunk, Christoph
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2010; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electron temperature; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Electronic transport in mesoscopic systems; Electronic transport in multilayers, nanoscale materials and structures; Exact sciences and technology; Mach–Zehnder interferometer; Physics; Quantum interference; Mach–Zehnder interferometer; Quantum interference; Electron temperature; Mach-Zehnder interferometer; Gallium arsenides; Aharonov-Bohm effect; Aluminium Gallium Arsenides Mixed; Oscillations; Background noise; Two-dimensional electron gas; Quantum interference phenomena; Mach-Zehnder interferometers; Temperature effects; Modulation; Thermal noise; Shot noise; III-V semiconductors
• ISSN: 1386-9477; 1873-1759
• DOI: 10.1016/j.physe.2009.11.072

We performed the conductance and the shot noise measurements in an electronic Mach–Zehnder interferometer. The visibility of the interference is investigated as a function of the electron temperature that is derived from the thermal noise of the interferometer. The non-equilibrium noise displays both h/e and h/2 e oscillations vs. the modulation gate voltage.