Weak localization, interaction effects, and the metallic phase in p-SiGe

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.65.125328
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TypeArticle
Journal titlePhysical review. B, Condensed matter and materials physics
Volume65
Issue12
Pages125328125338; # of pages: 11
AbstractMagnetoresistance results are presented for p-SiGe samples on the metallic side of the B=0 metal-insulator transition. It was possible to separate the weak localization and Zeeman interaction effects but the results could not be explained quantitatively within the framework of standard theories for quantum corrections of a weakly interacting two-dimensional system. Analysis using a theory for interaction corrections at intermediate temperatures, recently proposed by Zala, Narozhny, and Aleiner provided values of the Fermi-liquid parameter Fσ0 of order -0.5. Similar values also explain the linear increase of resistance with temperature characteristic of the metallic phase.
Publication date
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedNo
NPARC number12744564
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Record identifiercd90f5f0-f788-4e7a-af79-27c9ed04476e
Record created2009-10-27
Record modified2016-05-09
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