Yu-Shiba-Rusinov states induced by single Fe atoms on reconstructed compound superconductor V3Si
Surface Science(2024)
摘要
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.
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关键词
Superconductivity,Magnetism,Yu-Shiba-Rusinov bound states,A15-compound superconductor,Scanning tunneling microscopy,Scanning tunneling spectroscopy
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