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Interaction correction to the longitudinal conductivity and Hall resistivity in high-quality two-dimensional GaAs electron and hole systems

C. E. Yasin1, T. L. Sobey1, A. P. Micolich1, W. R. Clarke1, A. R. Hamilton1,*, M. Y. Simmons1, L. N. Pfeiffer2, K. W. West2, E. H. Linfield3 et al.

M. Pepper3 and D. A. Ritchie3

  • 1School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia
  • 2Bell Laboratories, Lucent Technologies, Murray Hills, New Jersey 07974, USA
  • 3Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, United Kingdom
  • *Email: Alex.Hamilton@unsw.edu.au

Phys. Rev. B 72, 241310(R) – Published 21 December, 2005

DOI: https://doi.org/10.1103/PhysRevB.72.241310

Abstract

We study the corrections in the low temperature limit to both the longitudinal conductivity and Hall resistivity due to electron-electron interactions in high-quality GaAs systems. Using the recent theory of Zala et al. [Phys. Rev. B 64, 214204 (2001)] we find that the interaction corrections to the conductivity and Hall resistivity are consistent with each other in nGaAs, although the agreement is not as good in pGaAs. This suggests that interaction effects can explain the metallic drop in resistivity at B=0 in nGaAs systems, but more work is required to understand pGaAs systems.

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