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001     9997
005     20211110141629.0
024 7 _ |a 10.1088/1367-2630/12/6/065006
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024 7 _ |a 2128/28976
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041 _ _ |a eng
082 _ _ |a 530
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|a Physics, Multidisciplinary
100 1 _ |0 P:(DE-Juel1)130545
|a Bihlmayer, G.
|b 0
|u FZJ
245 _ _ |a Surface- and edge-states in ultrathin Bi-Sb films
260 _ _ |a [Bad Honnef]
|b Dt. Physikalische Ges.
|c 2010
336 7 _ |a Journal Article
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336 7 _ |a article
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440 _ 0 |0 8201
|a New Journal of Physics
|v 12
|x 1367-2630
|y 065006
500 _ _ |a GB is grateful for the hospitality of the Donostia International Physics Center, where part of this work originated, and the financial support of the Deutsche Forschungsgemeinschaft (grant no. BI823/1-1).
520 _ _ |a Employing first-principles calculations, we studied the electronic structure of ultrathin Bi-Sb films, focusing on the appearance of surface or edge states that are topologically protected. Our calculations show that in ordered structures the Bi-Sb bonds are quite strong, forming well-defined double layers that contain both elements. We find surface states appearing on the (111) surface of a thin film of layerwise ordered Bi-Sb compound, while thin films in (110) orientation are insulating. In the gap of this insulator, edge states can be found in a (110)-oriented ribbon in the A17 (black phosphorus) structure. While these states are strongly spin polarized, their topological properties are found to be trivial. In all structures, we investigate the influence of spin-orbit coupling and analyze spin polarization of the states at the boundaries of the material.
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|a Koroteev, Y. M.
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|a Chulkov, E. V.
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700 1 _ |0 P:(DE-Juel1)130548
|a Blügel, S.
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|u FZJ
773 _ _ |0 PERI:(DE-600)1464444-7
|a 10.1088/1367-2630/12/6/065006
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856 7 _ |u http://dx.doi.org/10.1088/1367-2630/12/6/065006
856 4 _ |u https://juser.fz-juelich.de/record/9997/files/Bihlmayer_2010_New_J._Phys._12_065006.pdf
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