Anomalous dephasing of two-dimensional electrons in an AlGaAs/GaAs parabolic quantum well structure

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DOIResolve DOI: http://doi.org/10.1016/j.ssc.2011.07.033
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TypeArticle
Journal titleSolid State Communications
Volume151
Issue21
Pages15371540; # of pages: 4
SubjectA. AlGaAs/GaAs quantum well; D. Weak localization; D. Electron dephasing
AbstractMagnetoconductivity measurements are performed on a parabolic quantum well structure. The weak localization effect is observed at a low magnetic field for both single-subband and double-subband occupation regimes. Applying weak-localization theory, we have extracted the dephasing rate. The extracted dephasing rate increases with increasing conductivity in the small-energy-transfer regime and shows a similar trend as the electron density is increased in the large-energy-transfer regime. This is in conflict with Fermi-liquid theory, and cannot be attributed to electron–phonon scattering.
Publication date
LanguageEnglish
AffiliationNRC Institute for Microstructural Sciences; National Research Council Canada
Peer reviewedYes
NPARC number18856994
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Record identifier105e801c-31e4-4b2a-b684-a5f9574e8328
Record created2011-11-01
Record modified2016-05-09
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