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26 p, 1.8 MB Growth of Twin-Free and Low-Doped Topological Insulators on BaF2(111) / Bonell, Frédéric (Institut Català de Nanociència i Nanotecnologia) ; Cuxart, Marc G. (Institut Català de Nanociència i Nanotecnologia) ; Song, Kenan (Institut Català de Nanociència i Nanotecnologia) ; Robles, Roberto (Institut Català de Nanociència i Nanotecnologia) ; Ordejón Rontomé, Pablo (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ; Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia) ; Universitat Autònoma de Barcelona
We demonstrate the growth of twin-free BiTe and SbTe topological insulators by molecular beam epitaxy and a sizable reduction of the twin density in BiSe on lattice-matched BaF(111) substrates. Using X-ray diffraction, electron diffraction and atomic force microscopy, we systematically investigate the parameters influencing the formation of twin domains and the morphology of the films, and show that Se- and Te-based alloys differ by their growth mechanism. [...]
2017 - 10.1021/acs.cgd.7b00525
Crystal Growth and Design, Vol. 17, Núm. 9 (September 2017) , p. 4655-4660  

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