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  Ab initio study of topological surface states of strained HgTe

Wu, S.-C., Yan, B., & Felser, C. (2014). Ab initio study of topological surface states of strained HgTe. EPL, 107(5): 57006, pp. 1-5. doi:10.1209/0295-5075/107/57006.

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 Urheber:
Wu, Shu-Chun1, Autor           
Yan, Binghai2, Autor           
Felser, Claudia3, Autor           
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Binghai Yan, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863427              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Zusammenfassung: The topological surface states of mercury telluride (HgTe) are studied by ab initio calculations assuming different strains and surface terminations. For the Te-terminated surface, a single Dirac cone exists at the Gamma-point. The Dirac point shifts up from the bulk valence bands into the energy gap when the substrate-induced strain increases. At the experimental strain value (0.3%), the Dirac point lies slightly below the bulk valence band maximum. A left-handed spin texture was observed in the upper Dirac cone, similar to that of the Bi2Se3-type topological insulator. For the Hg-terminated surface, three Dirac cones appear at three time-reversal-invariant momenta, excluding the Gamma-point, with non-trivial spin textures. Copyright (C) EPLA, 2014

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Sprache(n): eng - English
 Datum: 2014-09-012014-09-01
 Publikationsstatus: Erschienen
 Seiten: 5
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000341559900026
DOI: 10.1209/0295-5075/107/57006
 Art des Abschluß: -

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Titel: EPL
  Andere : Europhysics Letters
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Bristol : IoPP
Seiten: 5 Band / Heft: 107 (5) Artikelnummer: 57006 Start- / Endseite: 1 - 5 Identifikator: Anderer: 0295-5075
CoNE: https://pure.mpg.de/cone/journals/resource/0295-5075