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Observation of topological crystalline insulator surface states on (111)-oriented Pb1-xSnxSe films
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2014 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 89, no 7, 075317- p.Article in journal (Refereed) Published
Abstract [en]

We present angle-resolved photoemission spectroscopy measurements of the surface states on in-situ grown (111) oriented films of Pb1-xSnxSe, a three-dimensional topological crystalline insulator. We observe surface states with Dirac-like dispersion at (Gamma) over bar and (M) over bar in the surface Brillouin zone, supporting recent theoretical predictions for this family of materials. We study the parallel dispersion isotropy and Dirac-point binding energy of the surface states, and perform tight-binding calculations to support our findings. The relative simplicity of the growth technique is encouraging, and suggests a clear path for future investigations into the role of strain, vicinality, and alternative surface orientations in (Pb,Sn)Se solid solutions.

Place, publisher, year, edition, pages
2014. Vol. 89, no 7, 075317- p.
Keyword [en]
Snte, Epitaxy, Phase
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-143704DOI: 10.1103/PhysRevB.89.075317ISI: 000332421900004Scopus ID: 2-s2.0-84897585096OAI: oai:DiVA.org:kth-143704DiVA: diva2:708567
Funder
Knut and Alice Wallenberg FoundationSwedish Research Council
Note

QC 20150623

Available from: 2014-03-28 Created: 2014-03-27 Last updated: 2017-12-05Bibliographically approved

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Publisher's full textScopusarXiv:1312.3226

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Hårdensson Berntsen, MagnusWojek, Bastian M.Tjernberg, Oscar

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