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TT: Fachverband Tiefe Temperaturen

TT 22: Superconductivity – Poster I

TT 22.5: Poster

Montag, 9. März 2026, 18:00–20:00, P1

Theory of ESR-STM in superconducting hybrids — •Marcel Polák and Björn Trauzettel — Institute for Theoretical Physics and Astrophysics, University of Würzburg, 97074 Würzburg, Germany

The electron spin resonance scanning tunneling microscopy (ESR-STM) is a technique that has emerged in the last few years and is a focus of both experimental and theoretical studies. It combines tunneling with an external rf field to probe magnetic adatoms with high resolution in energy and space. Such tunneling problems can be studied in the presence of superconducting electrodes. This leads to the presence of Yu-Shiba-Rusinov states, Andreev reflection and Shapiro steps. We employ the Green's function approach, to study the effect of an external rf driving on the tunneling current in superconducting hybrids in the presence of driven spins.

Keywords: Josephson junction; driven spin; ESR-STM; Yu-Shiba-Rusinov state