@Article{FornariAbrRapKycMor:2020:MoCoVa,
author = "Fornari, Celso Israel and Abramof, Eduardo and Rappl, Paulo
Henrique de Oliveira and Kycia, Stefan W. and Morelh{\~a}o,
S{\'e}rgio Luiz",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {University of Guelph} and
{Universidade de S{\~a}o Paulo}",
title = "Morphology control in van der Waals epitaxy of bismuth telluride
topological insulators",
journal = "MRS Advances",
year = "2020",
volume = "5",
number = "35/36",
pages = "1891--1897",
keywords = "molecular beam epitaxy (MBE), x-ray diffraction (XRD), atom probe
microscopy, quantum materials, Bi.",
abstract = "Bismuth telluride have regained significant attention as a
prototype of topological insulator. Thin films of high quality
have been investigated as a basic platform for novel spintronic
devices. Low mobility of bismuth and high desorption coefficient
of telluride compose a scenario where growth parameters have
drastic effects on structural and electronic properties of the
films. Recently [J. Phys. Chem. C 2019, 123, 24818-24825], a
detailed investigation has been performed on the dynamics of
defects in epitaxial films of this material, revealing the impact
of film/substrate lattice misfit on the films' lateral coherence.
Very small lattice misfit (<0.05%) are expected to have no
influence on quality of epitaxial system with atomic layers weakly
bonded to each other by van der Waals forces, contrarily to what
was observed. In this work, we investigate the correlation between
lattice misfit and size and morphology of the film crystalline
domains. Three-dimensional reciprocal-space maps of film Bragg
reflections obtained with synchrotron X-rays are used to visualize
the spatial conformation of the crystallographic domains through
film thickness, while atomic force microscopy images provide
direct information of the domains morphology at the film
surface.",
doi = "10.1557/adv.2020.202",
url = "http://dx.doi.org/10.1557/adv.2020.202",
issn = "2059-8521",
language = "en",
targetfile = "fornari_morphology.pdf",
urlaccessdate = "2024, Mar. 29"
}