Dynamic structure factor of disordered quantum spin ladders
Strongly Correlated Electrons
2018-10-24 v1
Abstract
We investigate the impact of quenched disorder on the dynamical correlation functions of two-leg quantum spin ladders. Perturbative continuous unitary transformations with the help of white graphs and bond-operator mean-field theory are used to calculate the one- and two-triplon contribution of the zero-temperature dynamical structure factor. Disorder results in huge effects on quasi-particles as well as composite bound states due to localization. This leads to intriguing quantum structures in dynamical correlation functions well observable in spectroscopic experiments.
Cite
@article{arxiv.1806.01717,
title = {Dynamic structure factor of disordered quantum spin ladders},
author = {M. Hörmann and P. Wunderlich and K. P. Schmidt},
journal= {arXiv preprint arXiv:1806.01717},
year = {2018}
}