Persistent Current in the Ferromagnetic Kondo Lattice Model
强关联电子
2009-10-30 v1 无序系统与神经网络
介观与纳米尺度物理
摘要
In this paper, we study the zero temperature persistent current in a ferromagnetic Kondo lattice model in the strong coupling limit. In this model, there are spontaneous spin textures at some values of the external magnetic flux. These spin textures contribute a geometric flux, which can induce an additional spontaneous persistent current. Since this spin texture changes with the external magnetic flux, we find that there is an anomalous persistent current in some region of magnetic flux: near Phi/Phi_0=0 for an even number of electrons and Phi/Phi_0=1/2 for an odd number of electrons.
引用
@article{arxiv.cond-mat/9706210,
title = {Persistent Current in the Ferromagnetic Kondo Lattice Model},
author = {Jun Zang and S. A. Trugman and A. R. Bishop and H. Röder},
journal= {arXiv preprint arXiv:cond-mat/9706210},
year = {2009}
}
备注
6 RevTeX pages, 10 figures included