Fermionic random transverse-field Ising spin chain
Disordered Systems and Neural Networks
2009-10-31 v2 Mesoscale and Nanoscale Physics
Abstract
The interplay of spin and charge fluctuations in the random transverse-field Ising spin chain on the fermionic space is investigated. The finite chemical potential, which controls the charge fluctuations, leads to the appearance of the quantum critical region in the phase diagram where the magnetic correlations are quenched by nonmagnetic sites. Regions of nonmonotonous temperature dependence of spin-spin correlation length appear at nonzero . The results on the one-fermion density of states of the model are discussed.
Cite
@article{arxiv.cond-mat/9807248,
title = {Fermionic random transverse-field Ising spin chain},
author = {A. L. Chudnovskiy},
journal= {arXiv preprint arXiv:cond-mat/9807248},
year = {2009}
}
Comments
10 pages, 2 figures included, citation corrected