TY  - SER
AU  - Shokri,Roozbeh
AU  - Roy,Sumalay
AU  - Mohseni,Katayoon
AU  - Ernst,Arthur
AU  - Otrokov,Mikhail M.
AU  - Chulkov,Evgueni V.
AU  - Kirschner,Jürgen
AU  - Meyerheim,Holger L.
TI  - Atomic and electronic structure of bismuth-bilayer-terminated Bi2Se3(0001) prepared by atomic hydrogen etching
KW  - селенид висмута
KW  - топологические изоляторы
KW  - атомная структура
KW  - электронная структура
KW  - статьи в журналах
N1  - Библиогр.: 41 назв
N2  - A bilayer of bismuth is recognized as a prototype two-dimensional topological insulator. Here we present a simple and well reproducible top-down approach to prepare a flat and well ordered bismuth bilayer with a lateral size of several hundred nanometers on Bi2Se3(0001). Using scanning tunneling microscopy, surface x-ray diffraction, and Auger electron spectroscopy we show that exposure of Bi2Se3(0001) to atomic hydrogen completely removes selenium from the top quintuple layer. The band structure of the system, calculated from first principles for the experimentally derived atomic structure, is in excellent agreement with recent photoemission data. Our results open interesting perspectives for the study of topological insulators in general
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000553151
ER  -