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  Weak topological insulators induced by the interlayer coupling: A first-principles study of stacked Bi2TeI

Tang, P., Yan, B., Cao, W., Wu, S.-C., Felser, C., & Duan, W. (2014). Weak topological insulators induced by the interlayer coupling: A first-principles study of stacked Bi2TeI. Physical Review B, 89(4): 041409, pp. 1-5. doi:10.1103/PhysRevB.89.041409.

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Tang, Peizhe1, Autor
Yan, Binghai2, Autor           
Cao, Wendong1, Autor
Wu, Shu-Chun3, Autor           
Felser, Claudia4, Autor           
Duan, Wenhui1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Binghai Yan, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863427              
3Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Zusammenfassung: Based on first-principles calculations, we predict Bi2TeI, a stoichiometric compound that is synthesized, to be a weak topological insulator (TI) in layered subvalent bismuth telluroiodides. Within a bulk energy gap of 80 meV, two Dirac-cone-like topological surface states exist on the side surface perpendicular to the BiTeI layer plane. These Dirac cones are relatively isotropic due to the strong interlayer coupling, distinguished from those of previously reported weak TI candidates. Moreover, with chemically stable cladding layers, the BiTeI-Bi-2-BiTeI sandwiched structure is a robust quantum spin Hall system, which can be obtained by simply cleaving the bulk Bi2TeI.

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Sprache(n): eng - English
 Datum: 2014-01-27
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000332283500003
DOI: 10.1103/PhysRevB.89.041409
 Art des Abschluß: -

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Titel: Physical Review B
  Andere : Phys. Rev. B
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Woodbury, NY : American Physical Society
Seiten: - Band / Heft: 89 (4) Artikelnummer: 041409 Start- / Endseite: 1 - 5 Identifikator: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008