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Title: Model of chiral spin liquids with Abelian and non-Abelian topological phases

Abstract

In this article, we present a two-dimensional lattice model for quantum spin-1/2 for which the low-energy limit is governed by four flavors of strongly interacting Majorana fermions. We study this low-energy effective theory using two alternative approaches. The first consists of a mean-field approximation. The second consists of a random phase approximation (RPA) for the single-particle Green's functions of the Majorana fermions built from their exact forms in a certain one-dimensional limit. The resulting phase diagram consists of two competing chiral phases, one with Abelian and the other with non-Abelian topological order, separated by a continuous phase transition. Remarkably, the Majorana fermions propagate in the two-dimensional bulk, as in the Kitaev model for a spin liquid on the honeycomb lattice. We identify the vison fields, which are mobile (they are static in the Kitaev model) domain walls propagating along only one of the two space directions.

Authors:
 [1];  [1];  [2];  [3]
  1. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Condensed Matter Theory Group
  2. Boston Univ., MA (United States). Dept. of Physics
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Division
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; Swiss National Science Foundation (SNSF); Boston Univ., MA (United States)
OSTI Identifier:
1425001
Alternate Identifier(s):
OSTI ID: 1413563; OSTI ID: 1425000
Report Number(s):
BNL-114843-2017-JAAM; BNL-114836-2017-JAAM
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1801993
Grant/Contract Number:  
SC0012704; 2000021 153648; FG02-06ER46316; AC02-98CH10886
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 22; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Chen, Jyong-Hao, Mudry, Christopher, Chamon, Claudio, and Tsvelik, A. M. Model of chiral spin liquids with Abelian and non-Abelian topological phases. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.96.224420.
Chen, Jyong-Hao, Mudry, Christopher, Chamon, Claudio, & Tsvelik, A. M. Model of chiral spin liquids with Abelian and non-Abelian topological phases. United States. https://doi.org/10.1103/PhysRevB.96.224420
Chen, Jyong-Hao, Mudry, Christopher, Chamon, Claudio, and Tsvelik, A. M. Fri . "Model of chiral spin liquids with Abelian and non-Abelian topological phases". United States. https://doi.org/10.1103/PhysRevB.96.224420. https://www.osti.gov/servlets/purl/1425001.
@article{osti_1425001,
title = {Model of chiral spin liquids with Abelian and non-Abelian topological phases},
author = {Chen, Jyong-Hao and Mudry, Christopher and Chamon, Claudio and Tsvelik, A. M.},
abstractNote = {In this article, we present a two-dimensional lattice model for quantum spin-1/2 for which the low-energy limit is governed by four flavors of strongly interacting Majorana fermions. We study this low-energy effective theory using two alternative approaches. The first consists of a mean-field approximation. The second consists of a random phase approximation (RPA) for the single-particle Green's functions of the Majorana fermions built from their exact forms in a certain one-dimensional limit. The resulting phase diagram consists of two competing chiral phases, one with Abelian and the other with non-Abelian topological order, separated by a continuous phase transition. Remarkably, the Majorana fermions propagate in the two-dimensional bulk, as in the Kitaev model for a spin liquid on the honeycomb lattice. We identify the vison fields, which are mobile (they are static in the Kitaev model) domain walls propagating along only one of the two space directions.},
doi = {10.1103/PhysRevB.96.224420},
journal = {Physical Review B},
number = 22,
volume = 96,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2017},
month = {Fri Dec 15 00:00:00 EST 2017}
}

Journal Article:

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Cited by: 14 works
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Works referenced in this record:

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Works referencing / citing this record:

Exact solution of an integrable anisotropic $\boldsymbol{J_1-J_2}$ spin chain model
journal, January 2020

  • Qiao, Yi; Sun, Pei; Xin, Zhirong
  • Journal of Physics A: Mathematical and Theoretical, Vol. 53, Issue 7
  • DOI: 10.1088/1751-8121/ab6a32

Model of spin liquids with and without time-reversal symmetry
journal, May 2019


From coupled wires to coupled layers: Model with three-dimensional fractional excitations
journal, June 2019


Coupled-wire constructions: a Luttinger liquid approach to topology
journal, February 2020


Ground-state degeneracy of non-Abelian topological phases from coupled wires
text, January 2019

  • Iadecola, Thomas; Neupert, Titus; Chamon, Claudio
  • American Physical Society
  • DOI: 10.5167/uzh-172138

Model of spin liquids with and without time-reversal symmetry
text, January 2018