Intermediate phase in interacting Dirac fermions with staggered potential
Abstract
By performing exact quantum Monte Carlo simulations of a model of interacting Dirac Fermions with staggered potential, we reveal a novel intermediate phase where the electronic correlations drive a band insulator metallic, and at a larger interaction, drive the metal-to-Mott insulator. We also show that the Mott insulating phase is antiferromagnetic. A complete phase diagram is achieved by studying the phase transitions at large staggered potential and interaction strengths, which shows that the intermediate state is robust and occupies a large part of the phase diagram and that it should be more feasible to be detected experimentally.
- Publication:
-
Physical Review B
- Pub Date:
- June 2020
- DOI:
- 10.1103/PhysRevB.101.245161
- arXiv:
- arXiv:1904.05504
- Bibcode:
- 2020PhRvB.101x5161W
- Keywords:
-
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 8 pages and 9 figures, accepted for publication in Physical Review B