Shubnikov-de Haas oscillations in a two-dimensional electron gas under subterahertz radiation

Q. Shi; P. D. Martin; A. T. Hatke; M. A. Zudov; J. D. Watson; G. C. Gardner; M. J. Manfra; L. N. Pfeiffer; K. W. West

doi:10.1103/PhysRevB.92.081405

Shubnikov-de Haas oscillations in a two-dimensional electron gas under subterahertz radiation

Q. Shi, P. D. Martin, A. T. Hatke, M. A. Zudov, J. D. Watson, G. C. Gardner, M. J. Manfra, L. N. Pfeiffer, K. W. West

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

We report on magnetotransport measurements in a two-dimensional (2D) electron gas subject to subterahertz radiation in the regime where Shubnikov-de Haas oscillations (SdHOs) and microwave-induced resistance oscillations (MIROs) coexist over a wide magnetic field range, spanning several harmonics of the cyclotron resonance. Surprisingly, we find that the SdHO amplitude is modified by the radiation in a nontrivial way, owing to the oscillatory correction which has the same period and phase as MIROs. This finding challenges our current understanding of microwave photoresistance in 2D electron gas, calling for future investigations.

Original language	English (US)
Article number	081405
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.92.081405
State	Published - Aug 19 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.92.081405

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title = "Shubnikov-de Haas oscillations in a two-dimensional electron gas under subterahertz radiation",

abstract = "We report on magnetotransport measurements in a two-dimensional (2D) electron gas subject to subterahertz radiation in the regime where Shubnikov-de Haas oscillations (SdHOs) and microwave-induced resistance oscillations (MIROs) coexist over a wide magnetic field range, spanning several harmonics of the cyclotron resonance. Surprisingly, we find that the SdHO amplitude is modified by the radiation in a nontrivial way, owing to the oscillatory correction which has the same period and phase as MIROs. This finding challenges our current understanding of microwave photoresistance in 2D electron gas, calling for future investigations.",

author = "Q. Shi and Martin, {P. D.} and Hatke, {A. T.} and Zudov, {M. A.} and Watson, {J. D.} and Gardner, {G. C.} and Manfra, {M. J.} and Pfeiffer, {L. N.} and West, {K. W.}",

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year = "2015",

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doi = "10.1103/PhysRevB.92.081405",

language = "English (US)",

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AU - Shi, Q.

AU - Martin, P. D.

AU - Hatke, A. T.

AU - Zudov, M. A.

AU - Watson, J. D.

AU - Gardner, G. C.

AU - Manfra, M. J.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2015/8/19

Y1 - 2015/8/19

N2 - We report on magnetotransport measurements in a two-dimensional (2D) electron gas subject to subterahertz radiation in the regime where Shubnikov-de Haas oscillations (SdHOs) and microwave-induced resistance oscillations (MIROs) coexist over a wide magnetic field range, spanning several harmonics of the cyclotron resonance. Surprisingly, we find that the SdHO amplitude is modified by the radiation in a nontrivial way, owing to the oscillatory correction which has the same period and phase as MIROs. This finding challenges our current understanding of microwave photoresistance in 2D electron gas, calling for future investigations.

AB - We report on magnetotransport measurements in a two-dimensional (2D) electron gas subject to subterahertz radiation in the regime where Shubnikov-de Haas oscillations (SdHOs) and microwave-induced resistance oscillations (MIROs) coexist over a wide magnetic field range, spanning several harmonics of the cyclotron resonance. Surprisingly, we find that the SdHO amplitude is modified by the radiation in a nontrivial way, owing to the oscillatory correction which has the same period and phase as MIROs. This finding challenges our current understanding of microwave photoresistance in 2D electron gas, calling for future investigations.

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Shubnikov-de Haas oscillations in a two-dimensional electron gas under subterahertz radiation

Abstract

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