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@INPROCEEDINGS{Kosma:1024405,
author = {Kosma, Adamantia and Blügel, Stefan and Rüssmann,
Philipp},
title = {{W}ork function engineering in superconducting
{I}r/{N}b(110) films},
reportid = {FZJ-2024-02148},
year = {2024},
abstract = {The topological superconducting hybrid structures have been
attracting considerable research interest in recent years,
as they are promising candidates for topologically protected
qubits. Because of this, a substantial demand for
appropriate superconducting substrates has been created. In
our study we explore the superconducting properties of
Ir/Nb(110) films. Our focus is on the investigation of the
change in the work function and the size of the
proximity-induced superconducting gap of Ir overlayers
deposited on Nb(110). The work function plays a crucial role
in determining the behavior of electrons at the
superconducting surface, thereby influencing the charge
transport. In the specific context of superconductor hybrid
structures for Majoranas, the target is to effectively
manage the work function mismatch while maintaining a robust
proximity effect through the overlayer. This approach will
also provide valuable information for studying the proximity
effect in a topological insulator/superconductor(TI/SC)
system. Our findings are based on first-principles
calculations using the full-potential Korringa-Kohn-Rostoker
Green function method and its Kohn-Sham Bogoliubov-de Gennes
(KS-BdG) extension to describe superconducting
heterostructures [1].We thank the ML4Q (EXC 2004/1 -
390534769) for funding.[1] P. Rüßmann, and S. Blügel,
Phys. Rev. B 105, 125143 (2022).},
month = {Mar},
date = {2024-03-17},
organization = {Spring meeting of German physical
society, Berlin (Germany), 17 Mar 2024
- 22 Mar 2024},
subtyp = {After Call},
cin = {PGI-1},
cid = {I:(DE-Juel1)PGI-1-20110106},
pnm = {5211 - Topological Matter (POF4-521) / DFG project
390534769 - EXC 2004: Materie und Licht für
Quanteninformation (ML4Q) (390534769)},
pid = {G:(DE-HGF)POF4-5211 / G:(GEPRIS)390534769},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1024405},
}