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Electronic structure of commensurate, nearly commensurate, and incommensurate phases of 1T−TaS_{2} by angle-resolved photoelectron spectroscopy, scanning tunneling spectroscopy, and density functional theory

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dc.abstract.enThe electronic structure of 1T−TaS2 showing a metal-insulator transition and a sequence of different charge density wave (CDW) transformations was discussed in the frame of variable temperature angle-resolved photoelectron spectroscopy (ARPES), scanning tunneling spectroscopy (STS), and density functional theory (DFT) calculations. For the commensurate charge density wave phase (CCDW) the Mott gap was estimated to be 0.4 eV and energy gaps ΔCCDW,1,ΔCCDW,2,ΔB3−HHB,ΔB4−B3 were observed. For the nearly commensurate charge density wave phase (NCCDW), the reminiscent of higher and lower Hubbard bands and a very pronounced electronic state associated with the parabolic band at the ¯¯¯Γ point in the Brillouin zone were identified. The incommensurate charge density wave phase (ICCDW) showed a high value of local density of states at the Fermi level and a very pronounced edge of the metallic surface state located in the range of 0.15–0.20 eV above the Fermi level. The obtained STS and ARPES results were consistent with our theoretical calculations performed within DFT formalism including spin-orbit coupling.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKołodziej, Jacek
dc.contributor.authorOlszowska, Natalia
dc.contributor.authorJałochowski, Mieczysław
dc.contributor.authorKopciuszyński, Marek
dc.contributor.authorRogala, Maciej
dc.contributor.authorDąbrowski, Paweł
dc.contributor.authorKrukowski, Paweł
dc.contributor.authorKowalczyk, Paweł
dc.contributor.authorBusiakiewicz, Adam
dc.contributor.authorKowalczyk, Dorota
dc.contributor.authorSzałowski, Karol
dc.contributor.authorKlusek, Zbigniew
dc.contributor.authorGmitra, M.
dc.contributor.authorStępniewski, Roman
dc.contributor.authorWysmołek, Andrzej
dc.contributor.authorLutsyk, Iaroslav
dc.contributor.authorLacinska, E.
dc.contributor.authorBinder, N.
dc.date.accessioned2024-01-24T22:41:52Z
dc.date.available2024-01-24T22:41:52Z
dc.date.issued2018
dc.description.financeNie dotyczy
dc.description.number19
dc.description.volume98
dc.identifier.doi10.1103/PHYSREVB.98.195425
dc.identifier.issn2469-9950
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/106011
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofPhysical Review B
dc.relation.pages195425
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.entransition metal dichalcogenides
dc.subject.encharge density wave
dc.subject.enangle-resolved photoelectron spectroscopy
dc.subject.enscanning tunneling spectroscopy
dc.subject.endensity functional theory
dc.subject.pldichalkogenki metali przejściowych
dc.subject.plfala gęstości ładunkowej
dc.subject.plkątoworozdzielcza spektroskopia fotoelektronów
dc.subject.plskaningowa mikroskopia tunelowa
dc.subject.plteoria funkcjonału gęstości
dc.titleElectronic structure of commensurate, nearly commensurate, and incommensurate phases of 1T−TaS_{2} by angle-resolved photoelectron spectroscopy, scanning tunneling spectroscopy, and density functional theory
dc.typeJournalArticle
dspace.entity.typePublication