分数量子霍尔复合费米子的有效质量台阶与费米液体参数
介观与纳米尺度物理
2009-11-07 v1
摘要
Effective mass of the composite fermion in the fractional quantum Hall system, which is of purely interaction originated, is shown, from a numerical study, to exhibit a curious nonmonotonic behavior with a staircase correlated with the number (=2,4,...) of attached flux quanta. This is surprising since the usual composite-fermion picture predicts a smooth behavior. On top of that, significant interactions are shown to exist between composite fermions, where the excitation spectrum is accurately reproduced in terms of Landau's Fermi liquid picture with negative (i.e., Hund's type) orbital and spin exchange interactions.
引用
@article{arxiv.cond-mat/0106398,
title = {Effective mass staircase and the Fermi liquid parameters for the fractional quantum Hall composite fermions},
author = {Masaru Onoda and Takahiro Mizusaki and Hideo Aoki},
journal= {arXiv preprint arXiv:cond-mat/0106398},
year = {2009}
}
备注
4 pages, 3 figures, REVTeX