Impurity-Driven Metal-Insulator Transitions in Holography
High Energy Physics - Theory
2023-07-05 v1 Strongly Correlated Electrons
Abstract
In this work, we study Metal-Insulator transition in a holographic model containing an interaction between the order parameter and charge-carrier density. It turns out that the impurity density of this model can drive the phase transition whose ordered phase corresponds to the insulating phase. The temperature behavior of DC conductivity distinguishes the insulating phase from the metal phase. We confirm this behavior by a numerical method and an analytic calculation. As a byproduct, we show the existence of a `quantum phase transition' supported by the Breitenlohner-Freedman bound argument.
Cite
@article{arxiv.2302.07539,
title = {Impurity-Driven Metal-Insulator Transitions in Holography},
author = {Yunseok Seo and Youngjun Ahn and Keun-Young Kim and Sang-Jin Sin and Kyung Kiu Kim},
journal= {arXiv preprint arXiv:2302.07539},
year = {2023}
}
Comments
22 pages, 21 figures