Charge ordering and hopping in a triangular array of quantum dots
介观与纳米尺度物理
2007-05-23 v1 统计力学
摘要
We demonstrate a mapping between the problem of charge ordering in a triangular array of quantum dots and a frustrated Ising spin model. Charge correlation in the low temperature state is characterized by an intrinsic height field order parameter. Different ground states are possible in the system, with a rich phase diagram. We show that electronic hopping transport is sensitive to the properties of the ground state, and describe the singularities of hopping conductivity at the freezing into an ordered state.
引用
@article{arxiv.cond-mat/9912484,
title = {Charge ordering and hopping in a triangular array of quantum dots},
author = {L. S. Levitov and Boris Kozinsky},
journal= {arXiv preprint arXiv:cond-mat/9912484},
year = {2007}
}
备注
5 figures