Charge Density Wave and Superconductivity in the Disordered Holstein Model

Abstract

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.

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Cited by in corpus (12)

• Phase Diagram of the Su-Schrieffer-Heeger-Hubbard model on a square lattice
• Electron-Phonon Interactions in Flat Band Systems
• Magnetism and charge order in the honeycomb lattice
• Charge order in the kagome lattice Holstein model: A hybrid Monte Carlo study
• The two-dimensional $t$-$t^{\prime }$ Holstein model
• Attractive Su-Schrieffer-Heeger-Hubbard Model on a Square Lattice Away from Half-Filling
• Charge Singlets and Orbital-Selective Charge Density Wave Transitions
• Supersolid Phase in the Diluted Holstein Model
• Magnetic impurities in a charge-ordered background
• Structural Phase Separation and Enhanced Superconductivity in La1.875Ba0.125CuO4 under Uniaxial Strain
• Disorder Suppression of Charge Density Waves in the Honeycomb Holstein Model
• Tuning superconductivity and charge density wave order by next-nearest-neighbor hopping integral in honeycomb Holstein model