title: Comparative study of microwave radiation-induced magnetoresistive oscillations induced by circularly- and linearly- polarized photo-excitation.
abstract: A comparative study of the radiation-induced magnetoresistance oscillations in the high mobility GaAs/AlGaAs heterostructure two dimensional electron system (2DES) under linearly- and circularly- polarized microwave excitation indicates a profound difference in the response observed upon rotating the microwave launcher for the two cases, although circularly polarized microwave radiation induced magnetoresistance oscillations observed at low magnetic fields are similar to the oscillations observed with linearly polarized radiation. For the linearly polarized radiation, the magnetoresistive response is a strong sinusoidal function of the launcher rotation (or linear polarization) angle, θ. For circularly polarized radiation, the oscillatory magnetoresistive response is hardly sensitive to θ.
authors.affiliation: Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303, USA.
authors.forename: Tianyu
authors.initials: T
authors.lastname: Ye
authors.affiliation: Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303, USA.
authors.forename: Han-Chun
authors.initials: HC
authors.lastname: Liu
authors.affiliation: Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303, USA.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Laboratorium für Festkörperphysik, ETH-Zürich, 8093 Zürich, Switzerland.
authors.forename: W
authors.initials: W
authors.lastname: Wegscheider
authors.affiliation: Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303, USA.
authors.forename: Ramesh G
authors.initials: RG
authors.lastname: Mani