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Título: | Hybridization of Yu-Shiba-Rusinov states in β-Bi2Pd |
Autor: | Zaldívar-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 publicación: | 2018 | Citación: | International conference on Novel 2D materials explored via scanning probe microscopy and spectroscopy (2018) | Resumen: | The 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. | Descripción: | Resumen 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. | URI: | http://hdl.handle.net/10261/179844 |
Aparece en las colecciones: | (CFM) Comunicaciones congresos |
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