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This content will become publicly available on November 8, 2018

Title: Nature of Continuous Phase Transitions in Interacting Topological Insulators

Here, we revisit the effects of the Hubbard repulsion on quantum spin Hall effects (QSHE) in two-dimensional quantum lattice models. We present both unbiased exact diagonalization and density-matrix renormalization group simulations with numerical evidence for a continuous quantum phase transition (CQPT) separating QSHE from the topologically trivial antiferromagnetic phase. Our numerical results suggest that the nature of CQPT exhibits distinct finite-size scaling behaviors, which may be consistent with either Ising or XY universality classes for different time-reversal symmetric QSHE systems.
Authors:
 [1] ; ORCiD logo [2] ; ORCiD logo [2] ;  [1]
  1. California State Univ. (CalState), Northridge, CA (United States). Dept. of Physics and Astronomy
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-17-26330
Journal ID: ISSN 2469-9950; TRN: US1800897
Grant/Contract Number:
AC52-06NA25396; DMR-1205734; DMR-1408560
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 19; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Material Science; Antiferromagnetism; Quantum spin Hall effect
OSTI Identifier:
1416285
Alternate Identifier(s):
OSTI ID: 1408066