A simple microscopic description of quantum Hall transition without Landau levels

Details A simple microscopic description of quantum Hall transition without Landau levels A simple microscopic description of quantum Hall transition without Landau levels

2009-03-13

arxiv.org/abs/0903.2436v2

Phys. Rev. Lett. 103, 066801 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Published version

Scientific paper

By restricting the motion of high-mobility 2D electron gas to a network of channels with smooth confinement, we were able to trace, both classically and quantum-mechanically, the interplay of backscattering, and of the bending action of a weak magnetic field. Backscattering limits the mobility, while bending initiates quantization of the Hall conductivity. We demonstrate that, in restricted geometry, electron motion reduces to two Chalker-Coddington networks, with opposite directions of propagation along the links, which are weakly coupled by disorder. Interplay of backscattering and bending results in the quantum Hall transition in a non-quantizing magnetic field, which decreases with increasing mobility. This is in accord with scenario of floating up delocalized states.

Affiliated with

Also associated with

No associations

Rating

A simple microscopic description of quantum Hall transition without Landau levels does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A simple microscopic description of quantum Hall transition without Landau levels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A simple microscopic description of quantum Hall transition without Landau levels will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-229264