Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-12-22
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 5 figures
Scientific paper
Low-temperature electron magnetotransport in single GaAs quantum wells with two populated subbands is studied at large filling factors. Magneto-inter-subband (MIS) and acoustic-phonon induced oscillations of the dissipative resistance are found to be coexisting but interfering substantially with each other. The experiments show that amplitude of the MIS-oscillations enhances significantly by phonons, indicating "constructive interference" between the phonon scattering and the intersubband electron transitions. Temperature damping of the quantum oscillations is found to be related to broadening of Landau levels caused by considerable electron-electron scattering.
Bykov Andrei
Goran A. V.
Vitkalov Sergey A.
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