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Title Quantum magnetism and topological superconductivity in Yu-Shiba-Rusinov chains
Authors Jacob F. Steiner, Christophe Mora, Katharina J. Franke, Felix von Oppen
Journal Physical Review Letters
2022, pg. 036801


Abstract Chains of magnetic adatoms on superconductors have been discussed as promising systems for realizing Majorana end states. Here, we show that dilute Yu-Shiba-Rusinov (YSR) chains are also a versatile platform for quantum magnetism and correlated electron dynamics, with widely adjustable spin values and couplings. Focusing on subgap excitations, we derive an extended $t-J$ model for dilute quantum YSR chains and use it to study the phase diagram as well as tunneling spectra. We explore the implications of quantum magnetism for the formation of a topological superconducting phase, contrasting it to existing models assuming classical spin textures.



BibTeX entry
    @article{ AGP-2022:142,
      title = { Quantum magnetism and topological superconductivity in Yu-Shiba-Rusinov chains },
      author = { Jacob F. Steiner, Christophe Mora, Katharina J. Franke, Felix von Oppen },
      journal = { Physical Review Letters },
      year = { 2022 },
      pages = { 036801-- },
    }