Sublinear Radiation Power Dependence of Photoexcited Resistance Oscillations in Two-Dimensional Electron Systems Articles uri icon

publication date

  • November 2010

start page

  • 205321


  • 20


  • 82

International Standard Serial Number (ISSN)

  • 1098-0121

Electronic International Standard Serial Number (EISSN)

  • 1550-235X


  • We find that the amplitude of the Rxx radiation-induced magnetoresistance oscillations in GaAs/AlGaAs system grows nonlinearly as A∝Palfa, where A is the amplitude and the exponent alfa<1. This striking result can be explained with the radiation-driven electron orbits model, which suggests that the amplitude of resistance oscillations depends linearly on the radiation electric field, and therefore on the square root of the power, P. We also study how this sublinear power law varies with lattice temperature and radiation frequency.