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Control of a two-dimensional electron gas on SrTiO3 (111) by atomic oxygen

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dc.contributor.authorMcKeown Walker, S.
dc.contributor.authorDe La Torre, A.
dc.contributor.authorBruno, F.Y.
dc.contributor.authorTamai, A.
dc.contributor.authorKim, T.K.
dc.contributor.authorHoesch, M.
dc.contributor.authorShi, M.
dc.contributor.authorBahramy, M.S.
dc.contributor.authorKing, P.D.C.
dc.contributor.authorBaumberger, F.
dc.date.accessioned2015-03-27T11:01:05Z
dc.date.available2015-03-27T11:01:05Z
dc.date.issued2014-10-20
dc.identifier.citationMcKeown Walker , S , De La Torre , A , Bruno , F Y , Tamai , A , Kim , T K , Hoesch , M , Shi , M , Bahramy , M S , King , P D C & Baumberger , F 2014 , ' Control of a two-dimensional electron gas on SrTiO 3 (111) by atomic oxygen ' , Physical Review Letters , vol. 113 , no. 17 , 177601 . https://doi.org/10.1103/PhysRevLett.113.177601en
dc.identifier.issn0031-9007
dc.identifier.otherPURE: 157759202
dc.identifier.otherPURE UUID: d269a5ef-05ef-4e68-ad56-e621eb842f23
dc.identifier.otherScopus: 84908139506
dc.identifier.otherWOS: 000343769900013
dc.identifier.urihttps://hdl.handle.net/10023/6380
dc.descriptionThis work was supported by Swiss National Science Foundation (200021-146995). P. D. C. K. was supported by the UK-EPSRC and the Royal Society and M. S. B. by Grant-in-Aid for Scientific Research (S) (No. 24224009) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan.en
dc.description.abstractWe report on the formation of a two-dimensional electron gas (2DEG) at the bare surface of (111) oriented SrTiO3. Angle resolved photoemission experiments reveal highly itinerant carriers with a sixfold symmetric Fermi surface and strongly anisotropic effective masses. The electronic structure of the 2DEG is in good agreement with self-consistent tight-binding supercell calculations that incorporate a confinement potential due to surface band bending. We further demonstrate that alternate exposure of the surface to ultraviolet light and atomic oxygen allows tuning of the carrier density and the complete suppression of the 2DEG.
dc.language.isoeng
dc.relation.ispartofPhysical Review Lettersen
dc.rights© 2014 American Physical Society. Reproduced in accordance with APS transfer of copyright agreement. The final version can also be found via the publisher's website: http://dx.doi.org/10.1103/PhysRevLett.113.177601en
dc.subjectQC Physicsen
dc.subject.lccQCen
dc.titleControl of a two-dimensional electron gas on SrTiO3 (111) by atomic oxygenen
dc.typeJournal articleen
dc.contributor.sponsorThe Royal Societyen
dc.contributor.sponsorEPSRCen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.113.177601
dc.description.statusPeer revieweden
dc.identifier.urlhttp://journals.aps.org/prl/supplemental/10.1103/PhysRevLett.113.177601en
dc.identifier.grantnumberUF120096en
dc.identifier.grantnumberEP/I031014/1en


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