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TT: Fachverband Tiefe Temperaturen
TT 66: Superconductivity: Yu-Shiba-Rusinov and Andreev Physics
TT 66.5: Vortrag
Donnerstag, 21. März 2024, 10:30–10:45, H 3005
Ab-initio investigation of Yu-Shiba-Rusinov states of 3d adatoms interacting with Rashba-split surface states — •Ilias Klepetsanis1,2, Philipp Rüssmann1,3, Jens Wiebe4, and Samir Lounis1,2 — 1Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich & JARA, 52425 Jülich, Germany — 2Faculty of Physics, University of Duisburg-Essen and CENIDE, 47053 Duisburg, Germany — 3Institute for Theoretical Physics and Astrophysics, University of Würzburg, 97074 Würzburg, Germany — 4Universität Hamburg, 20355 Hamburg, Germany
The interplay between magnetism and superconductivity has long been under the scope of condensed matter physics research, as two seemingly competing phenomena of order. Here, we employ the Bogoliubov-de-Gennes full-potential relativistic Korringa-Kohn-Rostoker Green function method [1] to study Yu-Shiba-Rusinov states emerging when 3d magnetic adatoms are interfaced with different spacers deposited on Nb surfaces. These spacers are heavily investigated to introduce Rashba surface states and engineer the strength of spin-orbit coupling at the vicinity of a superconductor, which leads to unconventional superconducting pairing [2]. In particular, we explored the cases of (111) films of Cu, Ag, Au as well as BiAg2/Ag and BiCu2/Cu.
We acknowledge funding by the DFG (SPP 2244; LO 1659/7-1; ML4Q Cluster of Excellence EXC 2004/1 – 390534769).
[1] P. Rüßmann, S. Blügel, Phys. Rev. B 105 (2022) 125143
[2] P. Rüßmann et al., Phys. Rev. Research 5 (2023) 043181
Keywords: Superconductivity; Magnetism; YSR states; DFT; Bogoliubov-de-Gennes