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Two-component scaling near the metal-insulator bifurcation in two dimensions

dc.contributor.authorGeldart, D. J. W.en_US
dc.contributor.authorNeilson, D.en_US
dc.date.accessioned2013-06-19T17:26:27Z
dc.date.available2013-06-19T17:26:27Z
dc.date.issued2003-05/15en_US
dc.description.abstractWe consider a two-component scaling picture for the resistivity of two-dimensional (2D) weakly disordered interacting electron systems at low temperature with the aim of describing both the vicinity of the bifurcation and the low resistance metallic regime in the same framework. We contrast the essential features of one-component and two-component scaling theories. We discuss why the conventional lowest order renormalization group equations do not show a bifurcation in 2D, and a semiempirical extension is proposed which does lead to bifurcation. Parameters, including the product zN, are determined by least squares fitting to experimental data. An excellent description is obtained for the temperature and density dependence of the resistance of silicon close to the separatrix. Implications of this two-component scaling picture for a quantum critical point are discusseden_US
dc.identifier.citationGeldart, D. J. W., and D. Neilson. 2003. "Two-component scaling near the metal-insulator bifurcation in two dimensions." Physical Review B (Condensed Matter and Materials Physics) 67(20): 205309-1. Copyright © 2003 American Physical Society.en_US
dc.identifier.issn0163-1829en_US
dc.identifier.issue20en_US
dc.identifier.startpage205309en_US
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.67.205309en_US
dc.identifier.urihttp://hdl.handle.net/10222/25107
dc.identifier.volume67en_US
dc.publisherAPS through AIPen_US
dc.relation.ispartofPhysical Review B (Condensed Matter and Materials Physics)en_US
dc.subjectBifurcationen_US
dc.subjectDensityen_US
dc.subjectElectrical resistivityen_US
dc.subjectElectron correlationsen_US
dc.subjectElemental semiconductorsen_US
dc.subjectLeast squares approximationsen_US
dc.subjectMetal-insulator transitionen_US
dc.subjectRenormalisationen_US
dc.subjectScaling phenomenaen_US
dc.subjectSiliconen_US
dc.subjectTwo-dimensional electron gasen_US
dc.titleTwo-component scaling near the metal-insulator bifurcation in two dimensionsen_US
dc.typearticleen_US

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