A toy model for the pseudogap state of cuprates
Superconductivity
2013-08-07 v1 Statistical Mechanics
Strongly Correlated Electrons
Abstract
A toy model is developed to capture "dance of pre-formed pairs" in the pseudogap state of high temperature cuprate superconductors. The model is a crude description of a hypothetical situation in which spin-driven spatial organization of the pre-formed pairs is analyzed. Within a mean-field theory (a slight generalization of Bragg-Williams theory) we examined the behaviour of heat capacity and an "order parameter" which captures the short range correlations between the pre-formed pairs. Below a transition temperature these short range correlations enhance and leads to a long range order (spin-density wave). This is examined through the breakdown of statistical independence.
Keywords
Cite
@article{arxiv.1308.1189,
title = {A toy model for the pseudogap state of cuprates},
author = {Navinder Singh},
journal= {arXiv preprint arXiv:1308.1189},
year = {2013}
}
Comments
6 pages, 13 figures