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TT: Fachverband Tiefe Temperaturen
TT 11: Superconductivity: Poster
TT 11.22: Poster
Montag, 17. März 2025, 15:00–18:00, P4
Real-space mapping of Yu-Shiba-Rusinov states around magnetic defects on superconducting surfaces — •Raffaele Aliberti1, 2, Samir Lounis1, 4, Philipp Rüßmann1, 3, and Stefan Blügel1 — 1Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, Jülich, Germany — 2RWTH Aachen, Aachen, Germany — 3Institute for Theoretical Physics and Astrophysics, University of Würzburg, Würzburg, Germany — 4Faculty of Physics, University of Duisburg-Essen and CENIDE, 47053 Duisburg, Germany
Interfacing magnetic impurities with superconductors generally gives rise to Yu-Shiba-Rusinov (YSR) bound states. Using first-principles, we study the case of Mn impurities deposited on a superconducting Ta (110) surface. We explore both the orbital nature and amplitude of the induced YSR states while investigating their spatial extent, which is characterized by an oscillatory and anisotropic behavior as function of distance with respect to the Mn impurities.In particular, we study the interplay of intrinsic electronic structure properties of the hosting superconductor and that of the impurities, which impacts the resulting "cloud" of YSR states.
We employ the Kohn-Sham Bogoliubov-de Gennes method within the all-electron full-potential relativistic Korringa-Kohn-Rostoker Green function method [1] interfaced with the AiiDA infrastructure for high-throughput automation [2].
Keywords: Superconductivity; Yu-Shiba-Rusinov states; Density Functional Theory; Quasi Particle Interference; Kohn-Sham Bogoliubov-de Gennes method