Charge Density Wave and Superconductivity in the Disordered Holstein Model
ORAL
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.
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.
*The work of B.X. and R.S. was supported by the grant DE-SC0014671 funded by the U.S. Department of Energy, Office of Science.
N.C.C. was partially supported by the Brazilian funding agencies CAPES and CNPq. E.K. acknowledges support from the National Science Foundation under grant No.MR-1609560. GGB acknowledges support from the University of the Côte d'Azur IDEX Jedi and Beijing CSRC.
–
Presenters
-
Bo Xiao
- Center for Computational Quantum Physics, Flatiron Institute