Microwave photoresistance in a two-dimensional electron gas with separated Landau levels

Abstract

Theories of microwave-induced resistance oscillations in high-mobility two-dimensional electron gas predict that with decreasing oscillation order $n$ or with increasing frequency $\omega$ the photoresistance maxima should appear closer to the cyclotron resonance harmonics due to increased Landau level separation. In this experimental study we demonstrate that while for a given $\omega$ the peaks do move towards the harmonics with decreasing $n$, there is no corresponding movement with increasing $\omega$ for a given $n$. These findings show that the positions of the photoresistance maxima cannot be directly linked to the Landau level separation challenging our current understanding of the phenomenon.

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Cited by in corpus (13)

• Nonequilibrium phenomena in high Landau levels
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• Weak antilocalization in HgTe quantum well with inverted energy spectrum
• Hall field-induced resistance oscillations in Ge/SiGe quantum wells
• The photoresponse of a two-dimensional electron gas at the second harmonic of the cyclotron resonance
• Microwave-induced resistance oscillations in tilted magnetic fields
• Microwave Photoresistance in an Ultrahigh Quality GaAs Quantum Well
• Magnetoplasmon resonance in 2D electron system driven into a zero-resistance state
• Multiphoton processes at cyclotron resonance subharmonics in a 2D electron system under DC and microwave excitation
• Effect of density on microwave-induced resistance oscillations in back-gated GaAs quantum wells
• Oscillatory photoresistance on the high field side of the cyclotron resonance