Replication Data for: Rare-earth atoms on Nb(110) as a platform to engineer topological superconductivityhttps://doi.org/10.26165/JUELICH-DATA/BSCH6MAntognini Silva, DavidWang, YuAtodiresei, NicolaeFriedrich, FelixBlügel, StefanBode, MatthiasRüßmann, PhilippOdobesko, ArtemJülich DATA2024-12-092024-12-09T15:41:35ZOur study reveals how Gd adatoms and dimers on a superconducting Nb(110) surface induce Yu-Shiba-Rusinov (YSR) states, offering valuable insights into magnetic interactions of rare-earth atoms on superconducting surfaces. By engineering Gd dimers along the [1-10] and [001] directions, we uncover an indirect coupling between the Gd magnetic moments and the Nb substrate via their valence d electrons, leading to significant alterations in the YSR spectrum around the dimers. We further demonstrate the possibility for Néel-type spin-spiral ground states in chains of Gd atoms on Nb(110). These findings highlight the potential of 4f elements like Gd as a promising platform for controlling a spin-spiral ground state, a crucial prerequisite for realizing a topological superconductor that can host Majorana zero modes. The combination of theoretical modeling based on density functional theory, atomistic spin-dynamics simulations and experimental techniques, including scanning tunneling microscopy and spectroscopy, provides a comprehensive understanding of the coupling mechanisms and their impact on the electronic properties of these systems and establishes rare-earth magnets on Nb as a promising platform in the field. This dataset collects the experimental and theoretical results of this work.PhysicsTopological superconductorMajorana zero modeTopological qubitsSurface scienceSuperconductivityMagnetismSTMDFTDavid Antognini Silva, Yu Wang, Nicolae Atodiresei, Felix Friedrich, Stefan Blügel, Matthias Bode, Philipp Rüßmann, Artem Odobesko, Rare-earth atoms on Nb(110) as a platform to engineer topological superconductivity, Materials Cloud Archive 2024.196 (2024), doi, 10.24435/materialscloud:ey-vnRüßmann, Philipp2024-12-09CC0CC0 Waiver