Quantum corrections to conductivity: from weak to strong localization

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dc.creatorMinkov, G. M.
dc.creatorRut, O. E.
dc.creatorGermanenko, A. V.
dc.creatorSherstobitov, A. A.
dc.creatorZvonkov, B. N.
dc.creatorUskova, E. A.
dc.creatorBirukov, A. A.
dc.date2001-11-28
dc.date2001-11-30
dc.date.accessioned2026-07-07T12:08:19Z
dc.date.available2026-07-07T12:08:19Z
dc.descriptionResults of detailed investigations of the conductivity and Hall effect in gated single quantum well GaAs/InGaAs/GaAs heterostructures with two-dimensional electron gas are presented. A successive analysis of the data has shown that the conductivity is diffusive for $k_F l=25-2$ and behaves like diffusive one for $k_F l=2-0.5$ down to the temperature T=0.4 K. It has been therewith found that the quantum corrections are not small at low temperature when $k_F l\simeq 1$. They are close in magnitude to the Drude conductivity so that the conductivity $σ$ becomes significantly less than $e^{2}/h$ (the minimal $σ$ value achieved in our experiment is about $3\times 10^{-8}Ω^{-1}$ at $k_Fl\simeq 0.5$ and $T=0.46$ K). We conclude that the temperature and magnetic field dependences of conductivity in whole $k_Fl$ range are due to changes of quantum corrections.
dc.descriptionRevTex 4.0, 10 figures, 7 two-column pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0111525
dc.identifierhttp://arxiv.org/abs/cond-mat/0111525
dc.identifierPhys. Rev. B 65, 235322 (2002)
dc.identifierdoi:10.1103/PhysRevB.65.235322
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/209278
dc.subjectDisordered Systems and Neural Networks
dc.titleQuantum corrections to conductivity: from weak to strong localization
dc.typetext

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