Fermi-Liquid Behavior of the Low-Density 2D Hole Gas in a GaAs/AlGaAs Heterostructure at Large Values of rs

Y. Y. Proskuryakov, A. K. Savchenko, S. S. Safonov, M. Pepper, M. Y. Simmons, and D. A. Ritchie
Phys. Rev. Lett. 86, 4895 – Published 21 May 2001
PDFExport Citation

Abstract

We examine the validity of the Fermi-liquid description of the dilute 2D hole gas in the crossover from “metallic”-to-“insulating” behavior of ρ(T). It has been established that, at rs as large as 29, negative magnetoresistance does exist and is well described by weak localization theory. The dephasing time, extracted from the magnetoresistance, is dominated by the T2 term due to hole-hole scattering in the clean limit. The effect of hole-hole interactions, however, is suppressed when compared with the theory derived for small rs.

  • Received 12 January 2001

DOI:https://doi.org/10.1103/PhysRevLett.86.4895

©2001 American Physical Society

Authors & Affiliations

Y. Y. Proskuryakov1, A. K. Savchenko1, S. S. Safonov1, M. Pepper2, M. Y. Simmons2, and D. A. Ritchie2

  • 1School of Physics, University of Exeter, Stocker Road, Exeter, EX4 4QL, United Kingdom
  • 2Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom

References (Subscription Required)

Click to Expand
Issue

Vol. 86, Iss. 21 — 21 May 2001

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×