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Article: Probing Critical Point Energies of Transition Metal Dichalcogenides: Surprising Indirect Gap of Single Layer WSe2

TitleProbing Critical Point Energies of Transition Metal Dichalcogenides: Surprising Indirect Gap of Single Layer WSe<inf>2</inf>
Authors
Keywordscritical points in Brillouin zones
interlayer coupling
scanning tunneling spectroscopy
Transition metal dichalcogenides
spin-orbit coupling
variable Z spectroscopy
Issue Date2015
Citation
Nano Letters, 2015, v. 15, n. 10, p. 6494-6500 How to Cite?
AbstractBy using a comprehensive form of scanning tunneling spectroscopy, we have revealed detailed quasi-particle electronic structures in transition metal dichalcogenides, including the quasi-particle gaps, critical point energy locations, and their origins in the Brillouin zones. We show that single layer WSe surprisingly has an indirect quasi-particle gap with the conduction band minimum located at the Q-point (instead of K), albeit the two states are nearly degenerate. We have further observed rich quasi-particle electronic structures of transition metal dichalcogenides as a function of atomic structures and spin-orbit couplings. Such a local probe for detailed electronic structures in conduction and valence bands will be ideal to investigate how electronic structures of transition metal dichalcogenides are influenced by variations of local environment. 2
Persistent Identifierhttp://hdl.handle.net/10722/298134
ISSN
2023 Impact Factor: 9.6
2023 SCImago Journal Rankings: 3.411
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, Chendong-
dc.contributor.authorChen, Yuxuan-
dc.contributor.authorJohnson, Amber-
dc.contributor.authorLi, Ming Yang-
dc.contributor.authorLi, Lain Jong-
dc.contributor.authorMende, Patrick C.-
dc.contributor.authorFeenstra, Randall M.-
dc.contributor.authorShih, Chih Kang-
dc.date.accessioned2021-04-08T03:07:45Z-
dc.date.available2021-04-08T03:07:45Z-
dc.date.issued2015-
dc.identifier.citationNano Letters, 2015, v. 15, n. 10, p. 6494-6500-
dc.identifier.issn1530-6984-
dc.identifier.urihttp://hdl.handle.net/10722/298134-
dc.description.abstractBy using a comprehensive form of scanning tunneling spectroscopy, we have revealed detailed quasi-particle electronic structures in transition metal dichalcogenides, including the quasi-particle gaps, critical point energy locations, and their origins in the Brillouin zones. We show that single layer WSe surprisingly has an indirect quasi-particle gap with the conduction band minimum located at the Q-point (instead of K), albeit the two states are nearly degenerate. We have further observed rich quasi-particle electronic structures of transition metal dichalcogenides as a function of atomic structures and spin-orbit couplings. Such a local probe for detailed electronic structures in conduction and valence bands will be ideal to investigate how electronic structures of transition metal dichalcogenides are influenced by variations of local environment. 2-
dc.languageeng-
dc.relation.ispartofNano Letters-
dc.subjectcritical points in Brillouin zones-
dc.subjectinterlayer coupling-
dc.subjectscanning tunneling spectroscopy-
dc.subjectTransition metal dichalcogenides-
dc.subjectspin-orbit coupling-
dc.subjectvariable Z spectroscopy-
dc.titleProbing Critical Point Energies of Transition Metal Dichalcogenides: Surprising Indirect Gap of Single Layer WSe<inf>2</inf>-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acs.nanolett.5b01968-
dc.identifier.pmid26389585-
dc.identifier.scopuseid_2-s2.0-84944342528-
dc.identifier.volume15-
dc.identifier.issue10-
dc.identifier.spage6494-
dc.identifier.epage6500-
dc.identifier.eissn1530-6992-
dc.identifier.isiWOS:000363003100031-
dc.identifier.issnl1530-6984-

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