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Article: Visualizing a bosonic symmetry protected topological phase in an interacting fermion model

TitleVisualizing a bosonic symmetry protected topological phase in an interacting fermion model
Authors
Issue Date2016
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/
Citation
Physical Review B: covering condensed matter and materials physics, 2016, v. 94 n. 16, article no. 165121 How to Cite?
Abstract© 2016 American Physical Society. Symmetry protected topological (SPT) phases in free fermion and interacting bosonic systems have been classified, but the physical phenomena of interacting fermionic SPT phases have not been fully explored. Here, employing large-scale quantum Monte Carlo simulation, we investigate the edge physics of a bilayer Kane-Mele-Hubbard model with zigzag ribbon geometry. Our unbiased numerical results show that the fermion edge modes are gapped out by interaction, while the bosonic edge modes remain gapless at the (1+1)d boundary, before the bulk quantum phase transition to a topologically trivial phase. Therefore, finite fermion gaps both in the bulk and on the edge, together with the robust gapless bosonic edge modes, prove that our system becomes an emergent bosonic SPT phase at low energy, which is directly observed in an interacting fermion lattice model.
Persistent Identifierhttp://hdl.handle.net/10722/268629
ISSN
2023 Impact Factor: 3.2
2023 SCImago Journal Rankings: 1.345
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWu, Han Qing-
dc.contributor.authorHe, Yuan Yao-
dc.contributor.authorYou, Yi Zhuang-
dc.contributor.authorYoshida, Tsuneya-
dc.contributor.authorKawakami, Norio-
dc.contributor.authorXu, Cenke-
dc.contributor.authorMeng, Zi Yang-
dc.contributor.authorLu, Zhong Yi-
dc.date.accessioned2019-03-25T08:00:15Z-
dc.date.available2019-03-25T08:00:15Z-
dc.date.issued2016-
dc.identifier.citationPhysical Review B: covering condensed matter and materials physics, 2016, v. 94 n. 16, article no. 165121-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10722/268629-
dc.description.abstract© 2016 American Physical Society. Symmetry protected topological (SPT) phases in free fermion and interacting bosonic systems have been classified, but the physical phenomena of interacting fermionic SPT phases have not been fully explored. Here, employing large-scale quantum Monte Carlo simulation, we investigate the edge physics of a bilayer Kane-Mele-Hubbard model with zigzag ribbon geometry. Our unbiased numerical results show that the fermion edge modes are gapped out by interaction, while the bosonic edge modes remain gapless at the (1+1)d boundary, before the bulk quantum phase transition to a topologically trivial phase. Therefore, finite fermion gaps both in the bulk and on the edge, together with the robust gapless bosonic edge modes, prove that our system becomes an emergent bosonic SPT phase at low energy, which is directly observed in an interacting fermion lattice model.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/-
dc.relation.ispartofPhysical Review B: covering condensed matter and materials physics-
dc.titleVisualizing a bosonic symmetry protected topological phase in an interacting fermion model-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevB.94.165121-
dc.identifier.scopuseid_2-s2.0-84992151820-
dc.identifier.volume94-
dc.identifier.issue16-
dc.identifier.spagearticle no. 165121-
dc.identifier.epagearticle no. 165121-
dc.identifier.eissn2469-9969-
dc.identifier.isiWOS:000385627200003-
dc.identifier.issnl2469-9950-

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