SKM 2023 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 57: Poster: Superconductivity I
TT 57.15: Poster
Donnerstag, 30. März 2023, 15:00–18:00, P2/OG2
Yu-Shiba-Rusinov states in unconventional superconductors — •Michael Hein1, Wolfgang Belzig1, and Juan Carlos Cuevas2 — 1Universität Konstanz, Konstanz, Germany — 2Universidad Autónoma de Madrid, Madrid, Spain
Recently there has been a huge effort to investigate individual magnetic impurities on superconducting surfaces in the context of scanning tunneling microscopy (STM) [1]. These STM-based experiments have enabled to elucidate the properties of the in-gap superconducting bound states known as Yu-Shiba-Rusinov states. These bound states are a key signature of the interplay between magnetism and superconductivity at the atomic scale and, in turn, they lead to a strong local modification of the superconducting state. In this regard, we present here our theoretical efforts to understand the physics of YSR states in the context of unconventional superconductivity, with special attention to the so-called Ising superconductors. We show that the study of YSR states can provide a very valuable way to reveal the underlying properties of unconventional superconductors.
[1] B. W. Heinrich, J. I. Pascual, and K. J. Franke, Prog. Surf. Sci. 93, 1 (2018)