High-frequency magneto-oscillations in GaAs/AlGaAs quantum wells

Y. W. Tan; H. L. Stormer; L. N. Pfeiffer; K. W. West

doi:10.1103/PhysRevLett.98.036804

High-frequency magneto-oscillations in GaAs/AlGaAs quantum wells

Y. W. Tan, H. L. Stormer, L. N. Pfeiffer, K. W. West

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

4 Scopus citations

Abstract

We have observed very high-frequency, highly reproducible magneto-oscillations in modulation doped GaAs/AlGaAs quantum well structures. The oscillations are periodic in an inverse magnetic field (1/B) and their amplitude increases with temperature up to T∼700mK. Being initially most pronounced around the filling factor ν=1/2, they move towards lower ν with increasing T. Front and back-gating data imply that these oscillations require a coupling to a parallel conducting layer. A comparison with existing oscillation models renders no explanation.

Original language	English (US)
Article number	036804
Journal	Physical review letters
Volume	98
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.98.036804
State	Published - 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.98.036804

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abstract = "We have observed very high-frequency, highly reproducible magneto-oscillations in modulation doped GaAs/AlGaAs quantum well structures. The oscillations are periodic in an inverse magnetic field (1/B) and their amplitude increases with temperature up to T∼700mK. Being initially most pronounced around the filling factor ν=1/2, they move towards lower ν with increasing T. Front and back-gating data imply that these oscillations require a coupling to a parallel conducting layer. A comparison with existing oscillation models renders no explanation.",

author = "Tan, {Y. W.} and Stormer, {H. L.} and Pfeiffer, {L. N.} and West, {K. W.}",

year = "2007",

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AU - Tan, Y. W.

AU - Stormer, H. L.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2007

Y1 - 2007

N2 - We have observed very high-frequency, highly reproducible magneto-oscillations in modulation doped GaAs/AlGaAs quantum well structures. The oscillations are periodic in an inverse magnetic field (1/B) and their amplitude increases with temperature up to T∼700mK. Being initially most pronounced around the filling factor ν=1/2, they move towards lower ν with increasing T. Front and back-gating data imply that these oscillations require a coupling to a parallel conducting layer. A comparison with existing oscillation models renders no explanation.

AB - We have observed very high-frequency, highly reproducible magneto-oscillations in modulation doped GaAs/AlGaAs quantum well structures. The oscillations are periodic in an inverse magnetic field (1/B) and their amplitude increases with temperature up to T∼700mK. Being initially most pronounced around the filling factor ν=1/2, they move towards lower ν with increasing T. Front and back-gating data imply that these oscillations require a coupling to a parallel conducting layer. A comparison with existing oscillation models renders no explanation.

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High-frequency magneto-oscillations in GaAs/AlGaAs quantum wells

Abstract

All Science Journal Classification (ASJC) codes

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