Probing Many-Body Localization by Spin Noise Spectroscopy
Disordered Systems and Neural Networks
2015-12-02 v1 Statistical Mechanics
Strongly Correlated Electrons
Abstract
We propose to apply spin noise spectroscopy (SNS) to detect many-body localization (MBL) in disordered spin systems. The SNS methods are relatively non-invasive technique to probe spontaneous spin fluctuations. We here show that the spin noise signals obtained by cross-correlation SNS with two probe beams can be used to separate the MBL phase from a noninteracting Anderson localized phase and a delocalized (diffusive) phase in the studied models for which we numerically calculate real time spin noise signals and their power spectra. For the archetypical case of the disordered XXZ spin chain we also develop a simple phenomenological model.
Cite
@article{arxiv.1506.05116,
title = {Probing Many-Body Localization by Spin Noise Spectroscopy},
author = {Dibyendu Roy and Rajeev Singh and Roderich Moessner},
journal= {arXiv preprint arXiv:1506.05116},
year = {2015}
}
Comments
8 pages, 8 figures