Composite fermions traversing a potential barrier
凝聚态物理
2009-10-28 v1
摘要
Using a composite fermion picture, we study the lateral transport between two two-dimensional electron gases, at filling factor 1/2, separated by a potential barrier. In the mean field approximation, composite fermions far from the barrier do not feel a magnetic field while in the barrier region the effective magnetic field is different from zero. This produces a cutoff in the conductance when represented as a function of the thickness and height of the barrier. There is a range of barrier heights for which an incompressible liquid, at , exists in the barrier region.
关键词
引用
@article{arxiv.cond-mat/9505152,
title = {Composite fermions traversing a potential barrier},
author = {L. Brey and C. Tejedor},
journal= {arXiv preprint arXiv:cond-mat/9505152},
year = {2009}
}
备注
3 pages, latex, 4 figures available upon request from [email protected]. To appear in Physical Review B (RC) June 15th