DC Field | Value | Language |
---|---|---|
dc.contributor.author | Keum, Dong Hoon | ko |
dc.contributor.author | Cho, Suyeon | ko |
dc.contributor.author | Kim, Jung Ho | ko |
dc.contributor.author | Choe, Duk Hyun | ko |
dc.contributor.author | Sung, Ha Jun | ko |
dc.contributor.author | Kan, Min | ko |
dc.contributor.author | Kang, Haeyong | ko |
dc.contributor.author | Hwang, Jae-Yeol | ko |
dc.contributor.author | Kim, Sung Wng | ko |
dc.contributor.author | YANG, HEEJUN | ko |
dc.contributor.author | Chang, Kee-Joo | ko |
dc.contributor.author | Lee, Young Hee | ko |
dc.date.accessioned | 2015-07-22T05:02:48Z | - |
dc.date.available | 2015-07-22T05:02:48Z | - |
dc.date.created | 2015-06-30 | - |
dc.date.created | 2015-06-30 | - |
dc.date.created | 2015-06-30 | - |
dc.date.created | 2015-06-30 | - |
dc.date.issued | 2015-06 | - |
dc.identifier.citation | NATURE PHYSICS, v.11, no.6, pp.482 - 487 | - |
dc.identifier.issn | 1745-2473 | - |
dc.identifier.uri | http://hdl.handle.net/10203/200039 | - |
dc.description.abstract | Layered transition metal dichalcogenides (TMDs) have attracted renewed interest owing to their potential use as two-dimensional components in next-generation devices(1,2). Although group 6 TMDs, such as MX2 with M = (Mo, W) and X = (S, Se, Te), can exist in several polymorphs(3), most studies have been conducted with the semiconducting hexagonal (2H) phase as other polymorphs often exhibit inhomogeneous formation(1,4-6). Here, we report a reversible structural phase transition between the hexagonal and stable monoclinic (distorted octahedral or 1T') phases in bulk single-crystalline MoTe2. Furthermore, an electronic phase transition from semimetallic to semiconducting is shown as 1T'-MoTe2 crystals go from bulk to few-layered. Bulk 1T'-MoTe2 crystals exhibit a maximum carrier mobility of 4,000 cm(2) V-1 s(-1) and a giant magnetoresistance of 16,000% in a magnetic field of 14 T at 1.8 K. In the few-layered form, 1T'-MoTe2 exhibits a bandgap opening of up to 60 meV, which our density functional theory calculations identify as arising from strong interband spin-orbit coupling. We further clarify that the Peierls distortion is a key mechanism to stabilize the monoclinic structure. This class of semiconducting MoTe2 unlocks the possibility of topological quantum devices based on non-trivial Z(2)-band-topology quantum spin Hall insulators in monoclinic TMDs (ref. 7). | - |
dc.language | English | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.title | Bandgap opening in few-layered monoclinic MoTe2 | - |
dc.type | Article | - |
dc.identifier.wosid | 000355552200014 | - |
dc.identifier.scopusid | 2-s2.0-84930383140 | - |
dc.type.rims | ART | - |
dc.citation.volume | 11 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | 482 | - |
dc.citation.endingpage | 487 | - |
dc.citation.publicationname | NATURE PHYSICS | - |
dc.identifier.doi | 10.1038/NPHYS3314 | - |
dc.contributor.localauthor | YANG, HEEJUN | - |
dc.contributor.localauthor | Chang, Kee-Joo | - |
dc.contributor.nonIdAuthor | Keum, Dong Hoon | - |
dc.contributor.nonIdAuthor | Cho, Suyeon | - |
dc.contributor.nonIdAuthor | Kim, Jung Ho | - |
dc.contributor.nonIdAuthor | Kan, Min | - |
dc.contributor.nonIdAuthor | Kang, Haeyong | - |
dc.contributor.nonIdAuthor | Hwang, Jae-Yeol | - |
dc.contributor.nonIdAuthor | Kim, Sung Wng | - |
dc.contributor.nonIdAuthor | Lee, Young Hee | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | MOS2 | - |
dc.subject.keywordPlus | TRANSISTORS | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | MAGNETORESISTANCE | - |
dc.subject.keywordPlus | ALPHA-MOTE2 | - |
dc.subject.keywordPlus | CRYSTALS | - |
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