Interacting topological phases in thin films of topological mirror Kondo insulators

Rui Xing Zhang, Cenke Xu, Chao Xing Liu

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We study interaction effects on thin films of topological mirror Kondo insulators (TMKIs), where the strong interaction is expected to play an important role. Our study has led to the following results: (i) We identify a rich phase diagram of noninteracting TMKIs with different mirror Chern numbers in the monolayer and bilayer thin films; (ii) we obtain the phase diagram with interaction and identify the regimes of interaction parameters to mimic bosonic symmetry-protected topological phases with either gapless bosonic modes or spontaneous mirror symmetry breaking at the boundary; and (iii) for the spontaneous mirror symmetry-breaking boundary, we also study various domain-wall defects between different mirror symmetry-breaking order parameters at the boundary. Our results reveal that the thin-film TMKI serves as an intriguing platform for experimental studies of interacting topological phases.

Original languageEnglish (US)
Article number235128
JournalPhysical Review B
Issue number23
DOIs
StatePublished - Dec 12 2016

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Mirrors
insulators
mirrors
Thin films
thin films
broken symmetry
Phase diagrams
phase diagrams
Domain walls
interactions
domain wall
Monolayers
platforms
Defects
defects
symmetry

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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title = "Interacting topological phases in thin films of topological mirror Kondo insulators",
abstract = "We study interaction effects on thin films of topological mirror Kondo insulators (TMKIs), where the strong interaction is expected to play an important role. Our study has led to the following results: (i) We identify a rich phase diagram of noninteracting TMKIs with different mirror Chern numbers in the monolayer and bilayer thin films; (ii) we obtain the phase diagram with interaction and identify the regimes of interaction parameters to mimic bosonic symmetry-protected topological phases with either gapless bosonic modes or spontaneous mirror symmetry breaking at the boundary; and (iii) for the spontaneous mirror symmetry-breaking boundary, we also study various domain-wall defects between different mirror symmetry-breaking order parameters at the boundary. Our results reveal that the thin-film TMKI serves as an intriguing platform for experimental studies of interacting topological phases.",
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Interacting topological phases in thin films of topological mirror Kondo insulators. / Zhang, Rui Xing; Xu, Cenke; Liu, Chao Xing.

In: Physical Review B, No. 23, 235128, 12.12.2016.

Research output: Contribution to journalArticle

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