Bi ultra-thin crystalline films on InAs(111)A and B substrates: a combined core-level and valence-band angle-resolved and dichroic photoemission study
Journal article, 2019
The growth of Bi on both the In-terminated (A) face and the As-terminated (B) face of InAs(111) has been investigated by low-energy electron diffraction, scanning tunnelling microscopy, and photoelectron spectroscopy using synchrotron radiation. The changes upon Bi deposition of the In 4d and Bi 5d(5/2) photoelectron signals allow to get a comprehensive picture of the Bi/InAs(111) interface. From the early stage the Bi growth on the A face is epitaxial, contrary to that on the B face that proceeds via the formation of islands. Angle-resolved photoelectron spectra show that the electronic structure of a Bi deposit of approximate to 10 bi-layers on the A face is identical to that of bulk Bi, while more than approximate to 30 bi-layers are needed for the B face. Both bulk and surface electronic states observed are well accounted for by fully relativistic ab initio calculations performed using the one-step model of photoemission. These calculations are used to analyse the dichroic photoemission data recorded in the vicinity of the Fermi level around the (Gamma) over bar point of the Brillouin zone.
ultra-thin films
indium arsenide
angle-resolved photoemission
circular dichroism
bismuth
growth
electronic structure calculations
Author
L. Nicolai
University of West Bohemia
J-M Mariot
Sorbonne University
SOLEIL Synchrotron
U. Djukic
University of Cergy-Pontoise
W. Wang
Lund University
O. Heckmann
University of Cergy-Pontoise
University Paris-Saclay
M. C. Richter
University of Cergy-Pontoise
University Paris-Saclay
Janusz Kanski
Chalmers, Physics
M. Leandersson
Lund University
T. Balasubramanian
Lund University
J. Sadowski
Linnaeus University
Polish Academy of Sciences
University of Warsaw
J. Braun
Ludwig Maximilian University of Munich (LMU)
H. Ebert
Ludwig Maximilian University of Munich (LMU)
I. Vobornik
National Research Council of Italy (CNR)
J. Fujii
National Research Council of Italy (CNR)
J. Minar
University of West Bohemia
K. Hricovini
University of Cergy-Pontoise
University Paris-Saclay
New Journal of Physics
1367-2630 (ISSN)
Vol. 21 12 123012Subject Categories
Atom and Molecular Physics and Optics
Materials Chemistry
Condensed Matter Physics
DOI
10.1088/1367-2630/ab5c14