Spontaneous Magnetisation in a Quantum Wire
强关联电子
2009-10-31 v3
摘要
An existence of predominant symmetrical spin configuration (spin polarised phase) and "diluted" density of states (pseudo-gap) in a layer under the Fermi level in a quantum wire is predicted. The condition of cross-over from non-polarised phase to polarised one was derived. The transition occurs for sufficiently low electron density in a wire and is accompanied by an acute decrease of electron density of states near the Fermi level.It may result in a corresponding decrease of conductance. A similar effect may exist in a two-dimensional electron gas.
引用
@article{arxiv.cond-mat/0008075,
title = {Spontaneous Magnetisation in a Quantum Wire},
author = {V. V'yurkov and A. Vetrov},
journal= {arXiv preprint arXiv:cond-mat/0008075},
year = {2009}
}
备注
8 pages, 1 figure