Microwave-induced Hall resistance in bilayer electron systems

Abstract

The influence of microwave irradiation on dissipative and Hall resistance in high-quality bilayer electron systems is investigated experimentally. We observe a deviation from odd symmetry under magnetic-field reversal in the microwave-induced Hall resistance ΔRxy, whereas the dissipative resistance ΔRxx obeys even symmetry. Studies of ΔR xy as a function of the microwave electric field and polarization exhibit a strong and nontrivial power and polarization dependence. The obtained results are discussed in connection to existing theoretical models of microwave-induced photoconductivity. © 2011 American Physical Society.