University of Minnesota
School of Physics & Astronomy


Phonon-induced resistance oscillations in 2D systems with a very high electron mobility


by A.T. Hatke, M.A. Zudov, L.N. Pfeiffer, and K.W. West accepted by Physical Review Letters.

We report on the temperature dependence of microwave-induced resistance oscillations in high-mobility two-dimensional electron systems. We find that the oscillation amplitude decays exponentially with increasing temperature, as exp(-alphaT2), where alpha scales with the inverse magnetic field. This observation indicates that the temperature dependence originates primarily from the modification of the single particle lifetime, which we attribute to electron-electron interaction effects.