Spin-polarized (001) surface states of the topological crystalline insulator Pb0.73Sn0.27Se
2013 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 87, no 11, 115106- p.Article in journal (Refereed) Published
We study the nature of (001) surface states in Pb0.73Sn0.27Se in the newly discovered topological-crystalline-insulator (TCI) phase as well as the corresponding topologically trivial state above the band-gap-inversion temperature. Our calculations predict not only metallic surface states with a nontrivial chiral spin structure for the TCI case, but also nonmetallic (gapped) surface states with nonzero spin polarization when the system is a normal insulator. For both phases, angle- and spin-resolved photoelectron spectroscopy measurements provide conclusive evidence for the formation of these (001) surface states in Pb0.73Sn0.27Se, as well as for their chiral spin structure.
Place, publisher, year, edition, pages
2013. Vol. 87, no 11, 115106- p.
Pb1-Xsnxse, Inversion, Snte, Alloys, Phase, Bands
IdentifiersURN: urn:nbn:se:kth:diva-120162DOI: 10.1103/PhysRevB.87.115106ISI: 000315731400002ScopusID: 2-s2.0-84874844135OAI: oai:DiVA.org:kth-120162DiVA: diva2:613783
FunderKnut and Alice Wallenberg FoundationSwedish Research CouncilEU, European Research Council
QC 201506232013-04-022013-04-022015-06-23Bibliographically approved