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Title: Anomalous Crystal Symmetry Fractionalization on the Surface of Topological Crystalline Insulators

Journal Article · · Physical Review Letters
 [1];  [2]
  1. Tsinghua Univ., Beijing (China). Inst. for Advanced Study; Perimeter Inst. for Theoretical Physics, Waterloo, ON (Canada)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Physics

The surface of a three-dimensional topological electron system often hosts symmetry-protected gapless surface states. With the effect of electron interactions, these surface states can be gapped out without symmetry breaking by a surface topological order, in which the anyon excitations carry anomalous symmetry fractionalization that cannot be realized in a genuine two-dimensional system. We show here that for a mirror-symmetry-protected topological crystalline insulator with mirror Chern number $n=4$, its surface can be gapped out by an anomalous $${\mathbb{Z}}_{2}$$ topological order, where all anyons carry mirror-symmetry fractionalization $${M}^{2}={-}1$$. The identification of such anomalous crystalline symmetry fractionalization implies that in a two-dimensional $${\mathbb{Z}}_{2}$$ spin liquid, the vison excitation cannot carry $${M}^{2}={-}1$$ if the spinon carries $${M}^{2}={-}1$$ or a half-integer spin.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Tsinghua Univ., Beijing (China)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Basic Research Program of China; National Natural Science Foundation of China (NSFC)
Grant/Contract Number:
SC0010526; 2011CBA00108; 11104154
OSTI ID:
1505737
Alternate ID(s):
OSTI ID: 1227745
Journal Information:
Physical Review Letters, Vol. 115, Issue 23; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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Cited By (15)

Reflection and Time Reversal Symmetry Enriched Topological Phases of Matter: Path Integrals, Non-orientable Manifolds, and Anomalies journal June 2019
Classification and surface anomaly of glide symmetry protected topological phases in three dimensions journal July 2017
Higher-order topological superconductors as generators of quantum codes journal August 2019
Reentrance of the topological phase in a spin-1 frustrated Heisenberg chain journal January 2020
Surface field theories of point group symmetry protected topological phases journal February 2018
Folding approach to topological order enriched by mirror symmetry journal February 2019
Higher-order symmetry-protected topological states for interacting bosons and fermions text January 2018
Higher-order topological superconductors as generators of quantum codes text January 2019
Anomalous Quasiparticle Symmetries and Non-Abelian Defects on Symmetrically Gapped Surfaces of Weak Topological Insulators text January 2015
Reflection and time reversal symmetry enriched topological phases of matter: path integrals, non-orientable manifolds, and anomalies text January 2016
Classification and surface anomaly of glide symmetry protected topological phases in three dimensions text January 2017
Time-reversal and spatial reflection symmetry localization anomalies in (2+1)D topological phases of matter text January 2017
Dynamical Signature of Symmetry Fractionalization in Frustrated Magnets text January 2018
Crystalline topological phases as defect networks text January 2018
Reentrance of Topological Phase in Spin-1 Frustrated Heisenberg Chain text January 2019

Figures / Tables (2)


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