Accessing topological superconductivity via a combined STM and renormalization group analysis
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-148181
- The search for topological superconductors has recently become a key issue in condensed matter physics, because of their possible relevance to provide a platform for Majorana bound states, non-Abelian statistics, and quantum computing. Here we propose a new scheme which links as directly as possible the experimental search to a material-based microscopic theory for topological superconductivity. For this, the analysis of scanning tunnelling microscopy, which typically uses a phenomenological ansatz for the superconductor gap functions, isThe search for topological superconductors has recently become a key issue in condensed matter physics, because of their possible relevance to provide a platform for Majorana bound states, non-Abelian statistics, and quantum computing. Here we propose a new scheme which links as directly as possible the experimental search to a material-based microscopic theory for topological superconductivity. For this, the analysis of scanning tunnelling microscopy, which typically uses a phenomenological ansatz for the superconductor gap functions, is elevated to a theory, where a multi-orbital functional renormalization group analysis allows for an unbiased microscopic determination of the material-dependent pairing potentials. The combined approach is highlighted for paradigmatic hexagonal systems, such as doped graphene and water-intercalated sodium cobaltates, where lattice symmetry and electronic correlations yield a propensity for a chiral singlet topological superconductor. We demonstrate that our microscopic material-oriented procedure is necessary to uniquely resolve a topological superconductor state.…
Autor(en): | Lars Elster, Christian Platt, Ronny Thomale, Werner Hanke, Ewelina M. Hankiewicz |
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URN: | urn:nbn:de:bvb:20-opus-148181 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Physik und Astronomie / Institut für Theoretische Physik und Astrophysik |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | Nature Communications |
Erscheinungsjahr: | 2015 |
Band / Jahrgang: | 6 |
Heft / Ausgabe: | 8232 |
Originalveröffentlichung / Quelle: | Nature Communications 6:8232 (2015). DOI: 10.1038/ncomms9232 |
DOI: | https://doi.org/10.1038/ncomms9232 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 53 Physik / 537 Elektrizität, Elektronik |
Freie Schlagwort(e): | Majorana fermions; Sr\(_2\)RuO\(_4\); insulators; states; surface; transition; tunneling spectroscopy; unconventional superconductivity; wave superconductors |
Datum der Freischaltung: | 08.11.2018 |
EU-Projektnummer / Contract (GA) number: | 336012 |
OpenAIRE: | OpenAIRE |
Lizenz (Deutsch): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |