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Response of the microwave-induced cyclotron harmonic resistance spike to an in-plane magnetic field

Yanhua Dai, Kristjan Stone, Ivan Knez, Chi Zhang, R. R. Du, Changli Yang, L. N. Pfeiffer, K. W. West
2011 Physical Review B  

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Microwave-induced resistance oscillations (MIRO) have been commonly observed in high-mobility GaAs/AlGaAs two-dimensional electrons systems (2DES) under microwave irradiation. In ultraclean GaAs/AlGaAs quantum wells (QWs), we have recently observed an extraordinary resistance spike at the second harmonic of cyclotron resonance (CR). In order to elucidate its origin, we have studied the response of microwave photoresistances in a two-axis magnetic field configuration, where the perpendicular
more » ... and the in-plane ( Bx ) components can be independently applied to the sample. The experiments reveal a distinctive response of the spike to the Bx compared with that of the MIRO. While the major MIRO peaks show an increasing phase-shift towards a quarter in increasing Bx, the spike position shows an essentially zero shift. This finding lends an additional support for the notion that the spike is a new effect in the microwave-driven 2DES. PACS number ( s): 73.43.Qt, 71.70.Di, 73.43.Jn PACS numbers:
doi:10.1103/physrevb.84.241303 fatcat:i74nlx3z65gknayibnf6yvjm2y
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Yanhua Dai, Kristjan Stone, Ivan Knez, Chi Zhang, R. R. Du, Changli Yang, L. N. Pfeiffer, K. W. West. "Response of the microwave-induced cyclotron harmonic resistance spike to an in-plane magnetic field." Physical Review B 84.24 (2011)