Localization of Interacting Dirac Fermions.
Phys Rev Lett
; 120(11): 116601, 2018 Mar 16.
Article
em En
| MEDLINE
| ID: mdl-29601744
ABSTRACT
Using exact quantum Monte Carlo calculations, we examine the interplay between localization of electronic states driven by many-body correlations and that by randomness in a two-dimensional system featuring linearly vanishing density of states at the Fermi level. A novel disorder-induced nonmagnetic insulating phase is found to emerge from the zero-temperature quantum critical point separating a semimetal and a Mott insulator. Within this phase, a phase transition from a gapless Anderson-like insulator to a gapped Mott-like insulator is identified. Implications of the phase diagram are also discussed.
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MEDLINE
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En
Ano de publicação:
2018
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Article