Dataset

FZJ-2023-05762

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Proximity-induced Cooper pairing at low and finite energies in the gold Rashba surface state

Rüßmann, P. (Corresponding author)FZJ* ; Bahari, M. ; Blügel, S.FZJ* ; Trauzettel, B.

2023
Materials Cloud

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Please use a persistent id in citations: doi:10.24435/materialscloud:20-9z

Abstract: Multi-band effects in superconducting heterostructures provide a rich playground for unconventional physics. We combine two complementary approaches based on density-functional theory (DFT) and effective low-energy model theory in order to investigate the proximity effect in a gold overlayer on the s-wave superconductor aluminium. We explain both theoretical approaches and intertwine the effective model and DFT analysis. This allows us to predict finite energy superconducting avoided crossings due to the interplay of the Rashba surface state of Au, and hybridization with the electronic structure of superconducting Al. We investigate the nature of the induced superconducting pairing and analyze their mixed singlet-triplet character. Our findings demonstrate the general recipes to explore material systems that exhibit novel finite-energy pairings.This dataset accompanies a publication where the data is presented and discussed in detail.

Keyword(s): ab initio ; superconductivity ; Bogoliubov-de Gennes ; spin orbit coupling ; JuKKR

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)
2. DFG project 390534769 - EXC 2004: Materie und Licht für Quanteninformation (ML4Q) (390534769) (390534769)

Appears in the scientific report 2023

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