Temperature-dependent Drude transport in a two-dimensional electron gas - Condensed Matter > Mesoscale and Nanoscale PhysicsReport as inadecuate




Temperature-dependent Drude transport in a two-dimensional electron gas - Condensed Matter > Mesoscale and Nanoscale Physics - Download this document for free, or read online. Document in PDF available to download.

Abstract: We consider transport of dilute two-dimensional electrons, with temperaturebetween Fermi and Debye temperatures. In this regime, electrons form anondegenerate plasma with mobility limited by potential disorder. Differentkinds of impurities contribute unique signatures to the resultingtemperature-dependent Drude conductivity, via energy-dependent scattering. Thisopens up a way to characterize sample disorder composition. In particular,neutral impurities cause a slow decrease in conductivity with temperature,whereas charged impurities result in conductivity growing as a square root oftemperature. This observation serves as a precaution for literally interpretingmetallic or insulating conductivity dependence, as both can be found in aclassical metallic system.



Author: D. S. Novikov

Source: https://arxiv.org/



DOWNLOAD PDF




Related documents