Abstract
The interplay between electron-electron correlations and disorder has been a central theme of condensed matter physics over the past 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.
| Original language | English |
|---|---|
| Article number | L060501 |
| Journal | Physical Review B |
| Volume | 103 |
| Issue number | 6 |
| DOIs | |
| State | Published - Feb 5 2021 |
| Externally published | Yes |
Funding
Acknowledgments. The work of B.X. and R.T.S. was supported by Grant No. DE-SC0014671 funded by the US Department of Energy, Office of Science. N.C.C. was partially supported by the Brazilian funding agencies CAPES and CNPq, and he also acknowledges PRACE for awarding him access to Marconi at CINECA, Italy (PRACE-2019204934). E.K. acknowledges support from the National Science Foundation under Grant No. DMR-1918572. G.G.B. acknowledges support from the University of the Côte d'Azur IDEX Jedi and Beijing CSRC. Computations were performed on the Spartan facility supported by NSF OAC-162664 at SJSU.
| Funders | Funder number |
|---|---|
| CINECA | PRACE-2019204934 |
| National Science Foundation | DMR-1918572, OAC-162664 |
| U.S. Department of Energy | |
| Office of Science | |
| Colorado Society for Respiratory Care | |
| Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | |
| Conselho Nacional de Desenvolvimento Científico e Tecnológico | |
| Université Côte d’Azur |