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Title: Localization of Interacting Dirac Fermions

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [4];  [3]
  1. Beijing Normal Univ. (China). Dept. of Physics; Beijing Computational Science Research Center (CSRC)
  2. Beijing Normal Univ. (China). Dept. of Physics
  3. Univ. of California, Davis, CA (United States). Dept. of Physics
  4. Univ. of Texas, Austin, TX (United States). Dept. of Physics

By 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.

Research Organization:
Univ. of California, Davis, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Natural Science Foundation of China (NSFC); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Chinese Academy of Engineering Physics (CAEP)
Grant/Contract Number:
NA0002908; 11774033; 11374034; 11334012; 2014KJJCB26; AC52- 07NA27344; 15-ERD-013
OSTI ID:
1464962
Alternate ID(s):
OSTI ID: 1425533
Journal Information:
Physical Review Letters, Vol. 120, Issue 11; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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Cited By (2)