Pseudospin ferromagnetism in double-quantum-wire systems
强关联电子
2007-05-23 v2 介观与纳米尺度物理
摘要
We propose that a pseudospin ferromagnetic (i.e inter-wire coherent) state can exist in a system of two parallel wires of finite width in the presence of a perpendicular magnetic field. This novel quantum many-body state appears when the inter wire distance decreases below a certain critical value which depends on the magnetic field. We determine the phase boundary of the ferromagnetic phase by analyzing the softening of the spin-mode velocity using the bosonization approach. We also discuss signatures of this state in tunneling and Coulomb drag experiments.
引用
@article{arxiv.cond-mat/0501694,
title = {Pseudospin ferromagnetism in double-quantum-wire systems},
author = {D. -W. Wang and E. G. Mishchenko and E. Demler},
journal= {arXiv preprint arXiv:cond-mat/0501694},
year = {2007}
}
备注
updated version