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Coexistence of surface superconducting and three-dimensional topological dirac states in semimetal kznbi

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dc.contributor.authorJunseong Song-
dc.contributor.authorKim, Sunghun-
dc.contributor.authorKim, Youngkuk-
dc.contributor.authorFu, Huixia-
dc.contributor.authorKoo, Jahyun-
dc.contributor.authorWang, Zhen-
dc.contributor.authorLee, Gyubin-
dc.contributor.authorLee, Jouhahn-
dc.contributor.authorOh, Sang Ho-
dc.contributor.authorBang, Joonho-
dc.contributor.authorMatsushita, Taku-
dc.contributor.authorWada, Nobuo-
dc.contributor.authorIkegami, Hiroki-
dc.contributor.authorDenlinger, Jonathan D.-
dc.contributor.authorYoung Hee Lee-
dc.contributor.authorYan, Binghai-
dc.contributor.authorKim, Yeongkwan-
dc.contributor.authorSung Wng Kim-
dc.date.accessioned2021-08-11T06:30:12Z-
dc.date.accessioned2021-08-11T06:30:12Z-
dc.date.available2021-08-11T06:30:12Z-
dc.date.available2021-08-11T06:30:12Z-
dc.date.created2021-08-09-
dc.date.issued2021-06-
dc.identifier.issn2160-3308-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/10077-
dc.description.abstractWe report the discovery of a new three-dimensional (3D) topological Dirac semimetal (TDS) material KZnBi, coexisting with a naturally formed superconducting state on the surface under ambient pressure. Using photoemission spectroscopy together with first-principles calculations, a 3D Dirac state with linear band dispersion is identified. The characteristic features of massless Dirac fermions are also confirmed by magnetotransport measurements, exhibiting an extremely small cyclotron mass of m∗=0.012 m0 and a high Fermi velocity of vF=1.04×106 m/s. Interestingly, superconductivity occurs below 0.85 K on the (001) surface, while the bulk remains nonsuperconducting. The captured linear temperature dependence of the upper critical field suggests the possible non-s-wave character of this surface superconductivity. Our discovery serves a distinctive platform to study the interplay between 3D TDS and the superconductivity.-
dc.language영어-
dc.publisherAmerican Physical Society-
dc.titleCoexistence of surface superconducting and three-dimensional topological dirac states in semimetal kznbi-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000668157600001-
dc.identifier.scopusid2-s2.0-85109111536-
dc.identifier.rimsid76192-
dc.contributor.affiliatedAuthorJunseong Song-
dc.contributor.affiliatedAuthorYoung Hee Lee-
dc.contributor.affiliatedAuthorSung Wng Kim-
dc.identifier.doi10.1103/PhysRevX.11.021065-
dc.identifier.bibliographicCitationPhysical Review X, v.11, no.2-
dc.relation.isPartOfPhysical Review X-
dc.citation.titlePhysical Review X-
dc.citation.volume11-
dc.citation.number2-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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