Quasi-periodic spin chains in a magnetic field
Strongly Correlated Electrons
2009-11-07 v2
Abstract
We study the interplay between a (quasi) periodic coupling array and an external magnetic field in a spin-1/2 XXZ chain. A new class of magnetization plateaux are obtained by means of Abelian bosonization methods which give rise to a sufficient quantization condition. The investigation of magnetic phase diagrams via exact diagonalization of finite clusters finds a complete agreement with the continuum treatment in a variety of situations.
Cite
@article{arxiv.cond-mat/0104082,
title = {Quasi-periodic spin chains in a magnetic field},
author = {M. Arlego and D. C. Cabra and M. D. Grynberg},
journal= {arXiv preprint arXiv:cond-mat/0104082},
year = {2009}
}
Comments
4 pages RevTeX, 5 PostScript figures included. Final version to appear in PRB