Unveiling the complete dispersion of the giant Rashba split surface states of ferroelectric α-GeTe(111) by alkali doping

dc.contributor.authorKremer, G.
dc.contributor.authorJaouen, T.
dc.contributor.authorSalzmann, B.
dc.contributor.authorNicolai, Laurent Christophe
dc.contributor.authorRumo, M.
dc.contributor.authorNicholson, C. W.
dc.contributor.authorHildebrand, B.
dc.contributor.authorDil, J. H.
dc.contributor.authorMinár, Jan
dc.contributor.authorSpringholz, G.
dc.contributor.authorKrempaský, J.
dc.contributor.authorMonney, C.
dc.date.accessioned2021-10-25T10:00:28Z
dc.date.available2021-10-25T10:00:28Z
dc.date.issued2020
dc.description.abstract-translatedα-GeTe(111) is a noncentrosymmetric ferroelectric material for which a strong spin-orbit interaction gives rise to giant Rashba split states in the bulk and at the surface. The detailed dispersions of the surface states inside the bulk band gap remains an open question because they are located in the unoccupied part of the electronic structure, making them inaccessible to static angle-resolved photoemission spectroscopy. We show that this difficulty can be overcome via in situ potassium doping of the surface, leading to a rigid shift of 80 meV of the surface states into the occupied states. Thus, we resolve, in great detail, their dispersion and highlight their crossing at the ̄ point, which, in comparison with density functional theory calculations, definitively confirms the Rashba mechanismen
dc.format7 s.cs
dc.format.mimetypeapplication/pdf
dc.identifier.citationKREMER, G. JAOUEN, T. SALZMANN, B. NICOLAI, LCH. RUMO, M. NICHOLSON, CW. HILDEBRAND, B. DIL, JH. MINÁR, J. SPRINGHOLZ, G. KREMPASKÝ, J. MONNEY, C. Unveiling the complete dispersion of the giant Rashba split surface states of ferroelectric α-GeTe(111) by alkali doping. Physical Review Research, 2020, roč. 2, č. 3, s. nestránkováno. ISSN: 2643-1564cs
dc.identifier.document-number604141000001
dc.identifier.doi10.1103/PhysRevResearch.2.033115
dc.identifier.issn2643-1564
dc.identifier.obd43933560
dc.identifier.uri2-s2.0-85099665402
dc.identifier.urihttp://hdl.handle.net/11025/45548
dc.language.isoenen
dc.project.IDEF15_003/0000358/Výpočetní a experimentální design pokročilých materiálů s novými funkcionalitamics
dc.publisherAmerican Physical Societyen
dc.relation.ispartofseriesPhysical Review Researchen
dc.rights© Creative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.subject.translatedPhotoemissionen
dc.subject.translatedelectronic structueen
dc.subject.translatedGeTeen
dc.subject.translatedK doppingen
dc.titleUnveiling the complete dispersion of the giant Rashba split surface states of ferroelectric α-GeTe(111) by alkali dopingen
dc.typečlánekcs
dc.typearticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen

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