Thermodynamic density of states of two-dimensional GaAs systems near the apparent metal-insulator transition

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dc.creatorAllison, G. D.
dc.creatorGalaktionov, E. A.
dc.creatorSavchenko, A. K.
dc.creatorSafonov, S. S.
dc.creatorFogler, M. M.
dc.creatorSimmons, M. Y.
dc.creatorRitchie, D. A.
dc.date2006-03-22
dc.date.accessioned2026-07-07T07:04:53Z
dc.date.available2026-07-07T07:04:53Z
dc.descriptionWe perform combined resistivity and compressibility studies of two-dimensional hole and electron systems which show the apparent metal-insulator transition - a crossover in the sign of dR/dT with changing density. No thermodynamic anomalies have been detected in the crossover region. Instead, despite a ten-fold difference in r_s, the compressibility of both electrons and holes is well described by the theory of nonlinear screening of the random potential. We show that the resistivity exhibits a scaling behavior near the percolation threshold found from analysis of the compressibility. Notably, the percolation transition occurs at a much lower density than the crossover.
dc.identifierhttps://arxiv.org/abs/cond-mat/0603581
dc.identifierhttp://arxiv.org/abs/cond-mat/0603581
dc.identifierPhys. Rev. Lett. 96, 216407 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.216407
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109484
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleThermodynamic density of states of two-dimensional GaAs systems near the apparent metal-insulator transition
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