Rare-earth atoms on Nb(110) as a platform to engineer topological superconductivity

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Antognini Silva, David</dc:creator>
  <dc:creator>Wang, Yu</dc:creator>
  <dc:creator>Atodiresei, Nicolae</dc:creator>
  <dc:creator>Friedrich, Felix</dc:creator>
  <dc:creator>Blügel, Stefan</dc:creator>
  <dc:creator>Bode, Matthias</dc:creator>
  <dc:creator>Rüßmann, Philipp</dc:creator>
  <dc:creator>Odobesko, Artem</dc:creator>
  <dc:date>2024-12-09</dc:date>
  <dc:description>Our 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.</dc:description>
  <dc:identifier>https://materialscloud-archive-failover.cineca.it/record/2024.196</dc:identifier>
  <dc:identifier>doi:10.24435/materialscloud:ey-vn</dc:identifier>
  <dc:identifier>mcid:2024.196</dc:identifier>
  <dc:identifier>oai:materialscloud.org:2444</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Materials Cloud</dc:publisher>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode</dc:rights>
  <dc:subject>Superconductivity</dc:subject>
  <dc:subject>topological materials</dc:subject>
  <dc:subject>Majorana zero mode</dc:subject>
  <dc:subject>Topological superconductor</dc:subject>
  <dc:subject>magnetism</dc:subject>
  <dc:subject>adatoms</dc:subject>
  <dc:subject>rare-earth</dc:subject>
  <dc:subject>DFT+U</dc:subject>
  <dc:subject>spin-dynamics</dc:subject>
  <dc:subject>STM</dc:subject>
  <dc:subject>spin-spiral</dc:subject>
  <dc:title>Rare-earth atoms on Nb(110) as a platform to engineer topological superconductivity</dc:title>
  <dc:type>Dataset</dc:type>
</oai_dc:dc>