Observation of a node in the quantum oscillations induced by microwave radiation
Alexey E. Kovalev, Sergey A. Zvyagin, Clifford R. Bowers, John L. Reno, and Jerry A. Simmons
TL;DR
This study reports the observation of a specific node in quantum oscillations caused by microwave radiation in a GaAs/AlGaAs heterostructure, aligning with cyclotron resonance at low temperatures and high frequencies.
Contribution
It provides direct experimental evidence linking microwave-induced quantum oscillation nodes to cyclotron resonance in a high-mobility 2D electron system.
Findings
Node in oscillations coincides with cyclotron resonance
Effective mass of carriers measured as 0.068 m0
Microwave radiation induces observable quantum oscillation features
Abstract
The microwave induced magnetoresistance in GaAs/AlGaAs heterostructure was studied at temperatures below 1K and frequencies in the range of 150-400 GHz. A distinct node in the Shubnikov- de Haas oscillations, induced by the microwave radiation, is clearly observed. The node position coincides with the position of the cyclotron resonance on the carriers with effective mass (0.068 +/- 0.005) m0.
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