Circular polarization dependent study of the microwave photoconductivity in a two-dimensional electron system
arXiv:cond-mat/0505183 · doi:10.1103/PhysRevLett.95.116804
Abstract
The polarization dependence of the low field microwave photoconductivity and absorption of a two-dimensional electron system has been investigated in a quasi-optical setup in which linear and any circular polarization can be produced in-situ. The microwave induced resistance oscillations and the zero resistance regions are notedly immune to the sense of circular polarization. This observation is discrepant with a number of proposed theories. Deviations only occur near the cyclotron resonance absorption where an unprecedented large resistance response is observed.
5 pages, 3 figures