Atom-specific spin mapping and buried topological states in a homologous series of topological insulators
2012; Nature Portfolio; Volume: 3; Issue: 1 Linguagem: Inglês
10.1038/ncomms1638
ISSN2041-1723
AutoresС. В. Еремеев, G. Landolt, Tatiana V. Menshchikova, Bartosz Slomski, Yury M. Koroteev, З. С. Алиев, М. Б. Бабанлы, Jürgen Henk, A. Ernst, L. Patthey, Andreas Eich, Alexander A. Khajetoorians, Julian Hagemeister, O. Pietzsch, Jens Wiebe, R. Wiesendanger, P. M. Échenique, Stepan S. Tsirkin, И. Р. Амирасланов, J. H. Dil, Е. В. Чулков,
Tópico(s)Graphene research and applications
ResumoA 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 (Bi(2)Te(3), Bi(2)Se(3) and Sb(2)Te(3)), with the addition of a third element of the group IV.
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