Atom-specific spin mapping and buried topological states in a homologous series of topological insulators

Sergey V. Eremeev (), Gabriel Landolt, Tatiana V. Menshchikova, Bartosz Slomski, Yury M. Koroteev, Ziya S. Aliev, Mahammad B. Babanly, Jürgen Henk, Arthur Ernst, Luc Patthey, Andreas Eich, Alexander Ako Khajetoorians, Julian Hagemeister, Oswald Pietzsch, Jens Wiebe, Roland Wiesendanger, Pedro M. Echenique, Stepan S. Tsirkin, Imamaddin R. Amiraslanov, J. Hugo Dil and Evgueni V. Chulkov
Additional contact information
Sergey V. Eremeev: Institute of Strength Physics and Materials Science
Gabriel Landolt: Swiss Light Source, Paul Scherrer Institut
Tatiana V. Menshchikova: Tomsk State University
Bartosz Slomski: Swiss Light Source, Paul Scherrer Institut
Yury M. Koroteev: Institute of Strength Physics and Materials Science
Ziya S. Aliev: Baku State University
Mahammad B. Babanly: Baku State University
Jürgen Henk: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle,Germany.
Arthur Ernst: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle,Germany.
Luc Patthey: Swiss Light Source, Paul Scherrer Institut
Andreas Eich: Institute of Applied Physics, University of Hamburg
Alexander Ako Khajetoorians: Institute of Applied Physics, University of Hamburg
Julian Hagemeister: Institute of Applied Physics, University of Hamburg
Oswald Pietzsch: Institute of Applied Physics, University of Hamburg
Jens Wiebe: Institute of Applied Physics, University of Hamburg
Roland Wiesendanger: Institute of Applied Physics, University of Hamburg
Pedro M. Echenique: Donostia International Physics Center (DIPC), Paseo de Manuel Lardizabal
Stepan S. Tsirkin: Tomsk State University
Imamaddin R. Amiraslanov: Institute of Physics, Azerbaijan National Academy of Science
J. Hugo Dil: Swiss Light Source, Paul Scherrer Institut
Evgueni V. Chulkov: Donostia International Physics Center (DIPC), Paseo de Manuel Lardizabal

Nature Communications, 2012, vol. 3, issue 1, 1-7

Abstract: Abstract A topological insulator is a state of quantum matter that, while being an insulator in the bulk, hosts topologically protected electronic states at the surface. These states open the opportunity to realize a number of new applications in spintronics and quantum computing. To take advantage of their peculiar properties, topological insulators should be tuned in such a way that ideal and isolated Dirac cones are located within the topological transport regime without any scattering channels. Here we report ab-initio calculations, spin-resolved photoemission and scanning tunnelling microscopy experiments that demonstrate that the conducting states can effectively tuned within the concept of a homologous series that is formed by the binary chalcogenides (Bi2Te3, Bi2Se3 and Sb2Te3), with the addition of a third element of the group IV.

Date: 2012
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DOI: 10.1038/ncomms1638

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