Extraction of overlapping radiation-induced magnetoresistance oscillations and bell-shaped giant magnetoresistance in the GaAs/AlGaAs 2DES using a multiconduction model

33rd International Conference on the Physics of Semiconductors

Samaraweera, R.L.^1 ; Liu, H.C.^1 ; Wang, Z.^1 ; Wegscheider, W.^2 ; Mani, R.G.^1

Department of Physics and Astronomy, Georgia State University, Atlanta

GA

30303, United States^1

Laboratorium für Festkörperphysik, ETH-Zürich, Zürich

8093, Switzerland^2

关键词: Conduction modeling;    GaAs/AlGaAs;    Giant magnetoresistance effect;    High mobility;    Parameter spaces;    Radiation-induced;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/864/1/012050/pdf
DOI  :  10.1088/1742-6596/864/1/012050

来源: IOP

【 摘 要 】

We present an experimental study aimed at extracting the microwave radiation-induced magnetoresistance oscillations from the bell-shape giant magnetoresistance in high mobility GaAs/AlGaAs devices using a multi-conduction model. The results show that the multi-conduction model describes the observed giant magnetoresistance effect and the model helps to extract radiation-induced magnetoresistance oscillations, over a wider parameter space.