Magnetic delocalisation of a two-dimensional electron gas and the quantum law of electron-electron scattering

M. J. Uren; R. A. Davies; M. Kaveh; M. Pepper

doi:10.1088/0022-3719/14/13/003

Magnetic delocalisation of a two-dimensional electron gas and the quantum law of electron-electron scattering

M. J. Uren, R. A. Davies, M. Kaveh, M. Pepper

University of Cambridge

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

68 Scopus citations

Abstract

Discusses the effect of a magnetic field on the weak localisation of a two-dimensional electron gas. It is shown that due to quantum corrections the electron-electron relaxation time tau _ee varies with electron temperature T and tau _ee^-1=A₁T+A ₂T², in the temperature range 3K-0.1K. This short tau _ee causes a rapid transition between states which are weakly localised and so reduces the logarithmic correction to the conductance. Negative magnetoresistance measurements are reported for (100) silicon MOSFETs in the temperature range 0.1-4K.

Original language	English
Article number	003
Pages (from-to)	L395-L402
Journal	Journal of Physics C: Solid State Physics
Volume	14
Issue number	13
DOIs	https://doi.org/10.1088/0022-3719/14/13/003
State	Published - 1981
Externally published	Yes

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abstract = "Discusses the effect of a magnetic field on the weak localisation of a two-dimensional electron gas. It is shown that due to quantum corrections the electron-electron relaxation time tau ee varies with electron temperature T and tau ee-1=A1T+A 2T2, in the temperature range 3K-0.1K. This short tau ee causes a rapid transition between states which are weakly localised and so reduces the logarithmic correction to the conductance. Negative magnetoresistance measurements are reported for (100) silicon MOSFETs in the temperature range 0.1-4K.",

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Magnetic delocalisation of a two-dimensional electron gas and the quantum law of electron-electron scattering

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