This title appears in the Scientific Report :
2023
Proximity-induced superconductivity and finite energy pairing in the Rashba surface state of gold
Proximity-induced superconductivity and finite energy pairing in the Rashba surface state of gold
The interplay of superconductivity and strong spin-orbit coupling has gained a lot of attention in recent year. For instance, it was realized that Cooper pairing can occur intrinsically away from the Fermi surface in j=3/2 superconductors with strong spin-orbit coupling [Phys. Rev. Research 4, L0120...
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Personal Name(s): | Rüssmann, Philipp (Corresponding author) |
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Bahari, Masoud / Trauzettel, Björn | |
Contributing Institute: |
Quanten-Theorie der Materialien; PGI-1 Quanten-Theorie der Materialien; IAS-1 |
Imprint: |
2023
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Conference: | APS March Meeting 2023, Las Vegas (USA), 2023-03-05 - 2023-03-10 |
Document Type: |
Conference Presentation |
Research Program: |
EXC 2004: Materie und Licht für Quanteninformation (ML4Q) Topological Matter |
Publikationsportal JuSER |
The interplay of superconductivity and strong spin-orbit coupling has gained a lot of attention in recent year. For instance, it was realized that Cooper pairing can occur intrinsically away from the Fermi surface in j=3/2 superconductors with strong spin-orbit coupling [Phys. Rev. Research 4, L012017 (2022)]. In this work, we present a theoretical study of the proximity-induced superconducting coupling in a Rashba surface state due to its contact to an s-wave superconductor.We combine theoretical modelling and ab initio Bogolibov-de Gennes simulations [PRB 105, 125143 (2022)] using the JuKKR density functional theory code [https://jukkr.fz-juelich.de]. We investigate the proximity effect in the Rashba surface state at the interface between Al(111) and Au(111) that arises from the combination of strong spin-orbit coupling in Au and broken symmetry at the interface. We discuss how inter-orbital pairing can occur at finite energies away from the Fermi level under an external magnetic field and comment on the pairing symmetry in the proximity-induced coupling of the Rashba surface state. |