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Two-Dimensional Dirac Fermions Protected by Space-Time InversionSymmetry in Black Phosphorus

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dc.contributor.authorJimin Kim-
dc.contributor.authorSeung Su Baik-
dc.contributor.authorSung Won Jung-
dc.contributor.authorYeongsup Sohn-
dc.contributor.authorSae Hee Ryu-
dc.contributor.authorHyoung Joon Choi-
dc.contributor.authorBohm-Jung Yang-
dc.contributor.authorKeun Su Kim-
dc.date.available2018-01-03T00:36:06Z-
dc.date.created2017-12-27-
dc.date.issued2017-12-
dc.identifier.issn0031-9007-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/4128-
dc.description.abstractWe report the realization of novel symmetry-protected Dirac fermions in a surface-doped two-dimensional (2D) semiconductor, black phosphorus. The widely tunable band gap of black phosphorus by the surface Stark effect is employed to achieve a surprisingly large band inversion up to∼0.6 eV . High-resolution angle-resolved photoemission spectra directly reveal the pair creation of Dirac points and their movement along the axis of the glide-mirror symmetry. Unlike graphene, the Dirac point of black phosphorus is stable, as protected by space-time inversion symmetry, even in the presence of spin-orbit coupling. Our results establish black phosphorus in the inverted regime as a simple model system of 2D symmetry-protected (topological) Dirac semimetals, offering an unprecedented opportunity for the discovery of 2D Weyl semimetals. © 2017 American Physical Society-
dc.description.uri1-
dc.language영어-
dc.publisherAMER PHYSICAL SOC-
dc.titleTwo-Dimensional Dirac Fermions Protected by Space-Time InversionSymmetry in Black Phosphorus-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000416433000022-
dc.identifier.scopusid2-s2.0-85037709084-
dc.identifier.rimsid61826ko
dc.date.tcdate2018-10-01-
dc.contributor.affiliatedAuthorJimin Kim-
dc.contributor.affiliatedAuthorBohm-Jung Yang-
dc.identifier.doi10.1103/PhysRevLett.119.226801-
dc.identifier.bibliographicCitationPHYSICAL REVIEW LETTERS, v.119, no.22, pp.226801-
dc.citation.titlePHYSICAL REVIEW LETTERS-
dc.citation.volume119-
dc.citation.number22-
dc.citation.startPage226801-
dc.date.scptcdate2018-10-01-
dc.description.wostc8-
dc.description.scptc8-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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