Charge Density Wave and Superconductivity in the Disordered Holstein Model

Autor: Xiao, Bo, Costa, Natanael C., Khatami, Ehsan, Batrouni, George G., Scalettar, Richard T.
Rok vydání: 2019
Předmět:
Zdroj: Phys. Rev. B 103, 060501 (2021)
Druh dokumentu: Working Paper
DOI: 10.1103/PhysRevB.103.L060501
Popis: The interplay between electron-electron correlations and disorder has been a central theme of condensed matter physics over the last several decades, with particular interest in the possibility that interactions might cause delocalization of an Anderson insulator into a metallic state, and the disrupting effects of randomness on magnetic order and the Mott phase. Here we extend this physics to explore electron-phonon interactions and show, via exact quantum Monte Carlo simulations, that the suppression of the charge density wave correlations in the half-filled Holstein model by disorder can stabilize a superconducting phase. Our simulations thus capture qualitatively the suppression of charge ordered phases and emergent superconductivity recently seen experimentally.
Databáze: arXiv