Metal-insulator transition in a 2D electron gas: Equivalence of two approaches for determining the critical point

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dc.creatorShashkin, A. A.
dc.creatorKravchenko, S. V.
dc.creatorKlapwijk, T. M.
dc.date2000-09-12
dc.date2001-12-05
dc.date.accessioned2026-07-07T02:38:42Z
dc.date.available2026-07-07T02:38:42Z
dc.descriptionThe critical electron density for the metal-insulator transition in a two-dimensional electron gas can be determined by two distinct methods: (i) a sign change of the temperature derivative of the resistance, and (ii) vanishing activation energy and vanishing nonlinearity of current-voltage characteristics as extrapolated from the insulating side. We find that in zero magnetic field (but not in the presence of a parallel magnetic field), both methods give equivalent results, adding support to the existence of a true zero-field metal-insulator transition.
dc.descriptionAs published
dc.identifierhttps://arxiv.org/abs/cond-mat/0009180
dc.identifierhttp://arxiv.org/abs/cond-mat/0009180
dc.identifierPhys. Rev. Lett. 87, 266402 (2001)
dc.identifierdoi:10.1103/PhysRevLett.87.266402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/16769
dc.subjectStrongly Correlated Electrons
dc.titleMetal-insulator transition in a 2D electron gas: Equivalence of two approaches for determining the critical point
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