Peter Hlawenka, Konrad Siemensmeyer, Eugen Weschke, Andrei Varykhalov, Jaime Sanchez-Barriga, Natalya Y. Shitsevalova, A. V. Dukhnenko, V. B. Filipov, Slavomir Gabani, Karol Flachbart, Oliver Rader, Emile D. L. Rienks
- SmB6 is predicted to be the first member of the intersection of topological insulators and Kondo insulators, strongly correlated materials in which the Fermi level lies in the gap of a many-body resonance that forms by hybridization between localized and itinerant states. While robust, surface-only conductivity at low temperature and the observation of surface states at the expected high symmetry points appear to confirm this prediction, we find both surface states at the (100) surface to be topologically trivial. We find the (Gamma) over bar state to appear Rashba split and explain the prominent (X) over bar state by a surface shift of the many-body resonance. We propose that the latter mechanism, which applies to several crystal terminations, can explain the unusual surface conductivity. While additional, as yet unobserved topological surface states cannot be excluded, our results show that a firm connection between the two material classes is still outstanding.
MetadatenAuthor details: | Peter Hlawenka, Konrad SiemensmeyerORCiD, Eugen Weschke, Andrei VarykhalovORCiDGND, Jaime Sanchez-BarrigaORCiDGND, Natalya Y. Shitsevalova, A. V. Dukhnenko, V. B. Filipov, Slavomir Gabani, Karol FlachbartORCiD, Oliver RaderORCiDGND, Emile D. L. RienksORCiD |
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DOI: | https://doi.org/10.1038/s41467-018-02908-7 |
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ISSN: | 2041-1723 |
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Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/29410418 |
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Title of parent work (English): | Nature Communications |
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Publisher: | Nature Publ. Group |
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Place of publishing: | London |
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Publication type: | Article |
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Language: | English |
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Date of first publication: | 2018/02/06 |
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Publication year: | 2018 |
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Release date: | 2022/01/24 |
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Volume: | 9 |
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Number of pages: | 7 |
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Funding institution: | Deutsche Forschungsgemeinschaft through SPP 1666; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG) [SFB 1143]; "Impuls- und Vernetzungsfonds der Helmholtz-Gemeinschaft" through Helmholtz-Russia Joint Research Group [408]; Helmholtz Virtual Institute " New states of matter and their excitations"; Slovak grant agencyVedecka grantova agentura MSVVaS SR a SAV (VEGA) [VEGA 2/0032/16, APVV-14-0605]; CFNT MVEP of the Slovak Academy of Sciences |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Mathematik |
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DDC classification: | 5 Naturwissenschaften und Mathematik / 51 Mathematik / 510 Mathematik |
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Peer review: | Referiert |
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Publishing method: | Open Access / Gold Open-Access |
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| DOAJ gelistet |
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License (German): | CC-BY - Namensnennung 4.0 International |
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External remark: | Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 612 |
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