Abstract

We have studied corrections to conductivity due to the coherent backscattering in low-disordered two-dimensional electron systems in silicon for a range of electron densities including the vicinity of the metal-insulator transition, where the dramatic increase of the spin susceptibility has been observed earlier. We show that the corrections, which exist deeper in the metallic phase, weaken upon approaching to the transition and practically vanish at the critical density, thus suggesting that the localization is suppressed near and at the transition even in zero field.

Notes

Originally posted at http://arxiv.org/abs/cond-mat/0210008v2. Preprint of an article published in Physical Review Letters, v.91 no.11, 2003.

Keywords

coherent backscattering, two-dimensional electron systems

Subject Categories

Backscattering, Electrons, Silicon, Condensed matter, Metal-insulator transitions

Disciplines

Physics

Publication Date

2003

Click button above to open, or right-click to save.

Included in

Physics Commons

Share

COinS