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

Eremeev S. V., Landolt G., Menshchikova T. V., Slomski B., Koroteev Y. M., Aliev Z. S., ...daha çox

Nature Communications, vol.3, 2012 (SCI-Expanded, Scopus) identifier identifier

  • Nəşrin Növü: Article / Article
  • Cild: 3
  • Nəşr tarixi: 2012
  • Doi nömrəsi: 10.1038/ncomms1638
  • jurnalın adı: Nature Communications
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Bəli

Qısa məlumat

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 (Bi 2Te3, Bi2Se3 and Sb 2Te3), with the addition of a third element of the group IV. © 2012 Macmillan Publishers Limited. All rights reserved.