Quantum-Hall to insulator transition
Disordered Systems and Neural Networks
2009-10-31 v1 Mesoscale and Nanoscale Physics
Abstract
The crossover from the quantum Hall regime to the Hall-insulator is investigated by varying the strength of the diagonal disorder in a 2d tight-binding model. The Hall and longitudinal conductivities and the behavior of the critical states are calculated numerically. We find that with increasing disorder the current carrying states close to the band center disappear first. Simultaneously, the quantized Hall conductivity drops monotonically to zero also from higher quantized values.
Cite
@article{arxiv.cond-mat/9808190,
title = {Quantum-Hall to insulator transition},
author = {H. Potempa and A. Bäker and L. Schweitzer},
journal= {arXiv preprint arXiv:cond-mat/9808190},
year = {2009}
}
Comments
5 pages LaTeX2e, 5 ps-figures included. Proceedings SemiMag13, Nijmegen 1998; to appear in Physica B