Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session T10: Topological Insulators and Superconductors
11:30 AM–2:30 PM,
Thursday, March 17, 2022
Room: McCormick Place W-181A
Sponsoring
Unit:
DMP
Chair: Dilimulati Aierken, University of Georgia
Abstract: T10.00012 : Density functional Bogoliubov-de Gennes calculations for a topological superconductor*
2:06 PM–2:18 PM
Presenter:
Philipp Ruessmann
(Forschungszentrum Jülich GmbH)
Authors:
Philipp Ruessmann
(Forschungszentrum Jülich GmbH)
Stefan Blügel
(Forschungszentrum Jülich)
Here we first introduce the recent Bogoliubov de-Gennes (BdG) extension to the all electron full potential relativistic Korringa-Kohn-Rostoker (KKR) Green function code JuKKR [2,3]. This KKR-BdG method allows a description of inhomogeneous superconductors on the basis of density functional theory. We apply this method to the s-wave superconductor Nb and study its 110 surface [2]. We then turn to the investigation of the proximity effect in Nb/TI interfaces and discuss the induced superconductivity in the topological surface state of this SC/TI heterostructure.
[1] Masatoshi Sato and Yoichi Ando 2017 Rep. Prog. Phys. 80 076501
[2] Philipp Rüßmann and Stefan Blügel, Density functional Bogoliubov-de Gennes analysis of superconducting Nb and Nb(110) surfaces. arXiv:2110.01713 (2021)
[3] https://jukkr.fz-juelich.de
*We acknowledge computing time granted by the JARA Vergabegremium and provided on the JARA Partition part of the supercomputer CLAIX at RWTH Aachen University. This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy – Cluster of Excellence Matter and Light for Quantum Computing (ML4Q) EXC 2004/1 – 390534769.
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