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Title: Localization of Interacting Dirac Fermions

Abstract

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.

Authors:
 [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
Publication Date:
Research Org.:
Univ. of California, Davis, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); National Natural Science Foundation of China (NNSFC); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Chinese Academy of Engineering Physics (CAEP)
OSTI Identifier:
1464962
Alternate Identifier(s):
OSTI ID: 1425533
Grant/Contract Number:  
NA0002908; 11774033; 11374034; 11334012; 2014KJJCB26; AC52- 07NA27344; 15-ERD-013
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 11; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; disordered systems; Hubbard model; quantum Monte Carlo

Citation Formats

Ma, Tianxing, Zhang, Lufeng, Chang, Chia-Chen, Hung, Hsiang-Hsuan, and Scalettar, Richard T. Localization of Interacting Dirac Fermions. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.116601.
Ma, Tianxing, Zhang, Lufeng, Chang, Chia-Chen, Hung, Hsiang-Hsuan, & Scalettar, Richard T. Localization of Interacting Dirac Fermions. United States. doi:10.1103/PhysRevLett.120.116601.
Ma, Tianxing, Zhang, Lufeng, Chang, Chia-Chen, Hung, Hsiang-Hsuan, and Scalettar, Richard T. Mon . "Localization of Interacting Dirac Fermions". United States. doi:10.1103/PhysRevLett.120.116601. https://www.osti.gov/servlets/purl/1464962.
@article{osti_1464962,
title = {Localization of Interacting Dirac Fermions},
author = {Ma, Tianxing and Zhang, Lufeng and Chang, Chia-Chen and Hung, Hsiang-Hsuan and Scalettar, Richard T.},
abstractNote = {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.},
doi = {10.1103/PhysRevLett.120.116601},
journal = {Physical Review Letters},
number = 11,
volume = 120,
place = {United States},
year = {2018},
month = {3}
}

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Free Publicly Available Full Text
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Cited by: 4 works
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