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
Artikel i vetenskaplig tidskrift, 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.

circular dichroism

growth

indium arsenide

ultra-thin films

bismuth

angle-resolved photoemission

electronic structure calculations

Författare

L. Nicolai

University of West Bohemia

J-M Mariot

Sorbonne Université

Orme Merisiers

U. Djukic

Université de Cergy-Pontoise

W. Wang

Lunds universitet

O. Heckmann

Université Paris-Saclay

Université de Cergy-Pontoise

M. C. Richter

Université Paris-Saclay

Université de Cergy-Pontoise

Janusz Kanski

Chalmers, Fysik

M. Leandersson

Lunds universitet

T. Balasubramanian

Lunds universitet

J. Sadowski

Uniwersytet Warszawski

Linnéuniversitetet

Polish Academy of Sciences

J. Braun

Ludwig-Maximilians-Universität München

H. Ebert

Ludwig-Maximilians-Universität München

I. Vobornik

Consiglio Nazionale delle Ricerche (CNR)

J. Fujii

Consiglio Nazionale delle Ricerche (CNR)

J. Minar

University of West Bohemia

K. Hricovini

Université Paris-Saclay

Université de Cergy-Pontoise

New Journal of Physics

1367-2630 (ISSN)

Vol. 21 12 123012

Ämneskategorier

Atom- och molekylfysik och optik

Materialkemi

Den kondenserade materiens fysik

DOI

10.1088/1367-2630/ab5c14

Mer information

Senast uppdaterat

2020-04-20