Universality at integer quantum Hall transitions
介观与纳米尺度物理
2009-10-31 v1
摘要
We report in this paper results of experimental and theoretical studies of transitions between different integer quantum Hall phases, as well as transition between the insulating phase and quantum Hall phases at high magnetic fields. We focus mainly on universal properties of the transitions. We demonstrate that properly defined conductivity tensor is universal at the transitions. We also present numerical results of a non-interacting electron model, which suggest that the Thouless conductance is universal at integer quantum Hall transitions, just like the conductivity tensor. Finite temperature and system size effects near the transition point are also studied.
引用
@article{arxiv.cond-mat/9805341,
title = {Universality at integer quantum Hall transitions},
author = {Kun Yang and D. Shahar and R. N. Bhatt and D. C. Tsui and M. Shayegan},
journal= {arXiv preprint arXiv:cond-mat/9805341},
year = {2009}
}
备注
20 pages, 15 figures