Numéro |
J. Phys. I France
Volume 4, Numéro 10, October 1994
|
|
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Page(s) | 1527 - 1537 | |
DOI | https://doi.org/10.1051/jp1:1994103 |
J. Phys. I France 4 (1994) 1527-1537
Two dimensional weak localization beyond the diffusion approximation
A. Cassam-Chenai1 and B. Shapiro1, 21 CNRS, LMM, 196 Av. Henry Ravera, BP107, 92225 Bagneux Cedex, France
2 Department of Physics, Technion-Israel Institute of Technology, 32000 Haifa, Israel
(Received 30 March 1994, received in final form 15 June 1994, accepted 30 June 1994)
Abstract
The standard theory of weak localization is based on a diffusion approximation.
It produces quantitatively accurate results only when the phase breaking length
and the magnetic length
LH are very large compased with the mean free path
. In some
practical cases
and
LH are only moderately large in comparison with
. For
such cases a better quantitative description of weak localization is obtained by going beyond
the diffusion approximation. We present theoretical results for the weak localization
correction which are not based on the diffusion approximation. We also present some
experimental data and compare them with the theory.
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