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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2010 Volume 91, Issue 8, Pages 419–423 (Mi jetpl695)

This article is cited in 91 papers

CONDENSED MATTER

Effect of the atomic composition of the surface on the electron surface states in topological insulators A 2V B 3VI

S. V. Eremeevab, Yu. M. Koroteevb, E. V. Chulkovc

a Tomsk State University
b Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences
c Donostia International Physics Center (DIPC), and CFM, Centro Mixto CSIC-UPV/EHU, Departamento de Física de Materiales, UPV/EHU, Apdo. 1072, 20080 San Sebastían, Spain

Abstract: The results of the theoretical investigation of the surface electronic structure of A2VB3VI compounds containing topologically protected surface states are reported. The ideal Bi2Te3, Bi2Se3, and Sb2Te3 surfaces and surfaces with an absent external layer of chalcogen atoms, which were observed experimentally as monolayer terraces, have been considered. It has been shown that the discrepancy between the calculated Fermi level and the value measured in the photoemission experiments can be attributed to the presence of the “dangling bond” states on the surface of the terraces formed by semimetal atoms. The fraction of such terraces on the surface has been estimated.

Received: 24.02.2010


 English version:
Journal of Experimental and Theoretical Physics Letters, 2010, 91:8, 387–391

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