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Título

Hybridization of Yu-Shiba-Rusinov states in β-Bi2Pd

AutorZaldívar-Fernández, Javier; Choi, Deung-Jang CSIC ORCID; García-Fernández, Carlos CSIC ORCID; Rubio-Verdú, Carmen; Ugeda, Miguel M. CSIC ORCID CVN; Herrera, Edwin; Guillamón, Isabel; Suderow, Hermann; Lorente, Nicolás CSIC ORCID CVN; Pascual, José I.
Fecha de publicación2018
CitaciónInternational conference on Novel 2D materials explored via scanning probe microscopy and spectroscopy (2018)
ResumenThe coupling between spins in transition metal atoms and Cooper pairs in a superconductor gives rise to localized sub-gap excitations known as Yu-Shiba-Rusinov (YSR) states. It has been proposed that the YSR states of proximal atoms hybridize, what can result in the formation of YSR bands. These bands are proposed as a platform to realize topological superconductivity in the presence of spin-orbit coupling or helical magnetic order and to host Majorana Zero-Energy Modes. It is thus crucial to understand the basic mechanisms of YSR state hybridization in atomic nanostructures. In this work we investigate the hybridization of YSR states in atomic-scale structures constructed by lateral manipulation on the surface of β-Bi2Pd, a centrosymmetric s-wave superconductor. We use Mn adatoms as magnetic impurities, which show a single YSR state inside the superconducting gap. We find that Mn dimers show bonding and anti-bonding states as a result of the coupling between the constituent impurities and we track the evolution of these states in longer structures. From our results we conclude that Mn is a good candidate for the construction of atomic chains with extended bands and determine that only along certain directions the magnetic order might result in relevant non-trivial effects.
DescripciónResumen del trabajo presentado a la International conference on: Novel 2D materials explored via scanning probe microscopy & spectroscopy; celebrada en Donostia.San Sebastián (País Vasco, España) del 25 al 29 de junio de 2018.
URIhttp://hdl.handle.net/10261/179844
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