Yu–Shiba–Rusinov states induced by single Fe atoms on reconstructed compound superconductor V3Si

• Published in: Surface science Vol. 746
• Main Authors: Noßmann, Bastian, Yu, Zuodong, Das, Ankur, Schulte, Stefan, Néel, Nicolas, Wu, Chien-Te, Kirchner, Stefan, Kröger, Jörg
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.08.2024
• Subjects: A15-compound superconductor; Magnetism; Scanning tunneling microscopy; Scanning tunneling spectroscopy; Superconductivity; Yu–Shiba–Rusinov bound states; Scanning tunneling microscopy; Magnetism; Scanning tunneling spectroscopy; Yu–Shiba–Rusinov bound states; A15-compound superconductor; Superconductivity
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/j.susc.2024.122504

Reconstructed surfaces of the A15-compound superconductor V3Si(100) that are possibly induced by the segregation of bulk impurities serve as platforms to study the dependence of Yu–Shiba–Rusinov states induced by a single Fe atom on the adsorption site. Their number, energy and electron–hole asymmetry vary strongly with the atomic environment of the Fe atom. These variations are indicative of different Fe d-orbitals being active in the site-dependent exchange coupling with the substrate Cooper pairs. Spatially resolved spectroscopy gives rise to a short decay length of the Yu–Shiba–Rusinov states and thereby suggests the three-dimensional character of the scattering process underlying the bound states. [Display omitted] •Yu–Shiba–Rusinov states induced in an A15-compound superconductor.•Dependence of intragap states on the adsorption site of the single-atom magnetic impurity.•Three-dimensional character of scattering unveiled by strong damping of the spectral weight in spatially resolved spectroscopy.