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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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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0023-F1C2-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-625E-5
Genre: Journal Article

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 Creators:
Wu, Shu-Chun1, Author              
Yan, Binghai2, Author              
Felser, Claudia3, Author              
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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 Abstract: 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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Language(s): eng - English
 Dates: 2014-09-012014-09-01
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
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Title: EPL
  Other : Europhysics Letters
Source Genre: Journal
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Publ. Info: Bristol : IoPP
Pages: 5 Volume / Issue: 107 (5) Sequence Number: 57006 Start / End Page: 1 - 5 Identifier: Other: 0295-5075
CoNE: /journals/resource/0295-5075