CeRu$_4$Sn$_6$: a strongly correlated material with nontrivial topology
| Autor: | Liu Tjeng, D. Schmitz, Arata Tanaka, Eugen Weschke, T. Willers, Jean-Pascal Rueff, Deepa Kasinathan, Ali Al-Zein, Martin Sundermann, James M. Ablett, Maurits W. Haverkort, H. Winkler, Andrey Prokofiev, F. Strigari, Silke Paschen, M. Moretti Sala, A. Severing |
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| Přispěvatelé: | Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany, Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria, Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), BESSY II, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH (HZB), European Synchrotron Radiation Facility (ESRF), ADSM Hiroshima Univ, Dept Quantum Matter, Higashihiroshima 7398530, Japan, Max Planck Institute for Chemical Physics of Solids (CPfS), Max-Planck-Gesellschaft |
| Rok vydání: | 2015 |
| Předmět: |
[PHYS]Physics [physics]
Physics Surface (mathematics) Multidisciplinary Strongly Correlated Electrons (cond-mat.str-el) Macroscopic quantum phenomena FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology Topology 01 natural sciences Article Condensed Matter - Strongly Correlated Electrons Topological insulator 0103 physical sciences State of matter Strongly correlated material 010306 general physics 0210 nano-technology Electronic band structure Controlling collective states Topology (chemistry) Surface states |
| Zdroj: | Scientific Reports Scientific Reports, Nature Publishing Group, 2015, 5, 9 p. ⟨10.1038/srep17937⟩ 'Scientific Reports ', vol: 5, pages: 17937-1-17937-9 (2016) |
| ISSN: | 2045-2322 |
| DOI: | 10.48550/arxiv.1508.07129 |
| Popis: | Topological insulators form a novel state of matter that provides new opportunities to create unique quantum phenomena. While the materials used so far are based on semiconductors, recent theoretical studies predict that also strongly correlated systems can show non-trivial topological properties, thereby allowing even the emergence of surface phenomena that are not possible with topological band insulators. From a practical point of view, it is also expected that strong correlations will reduce the disturbing impact of defects or impurities, and at the same increase the Fermi velocities of the topological surface states. The challenge is now to discover such correlated materials. Here, using advanced x-ray spectroscopies in combination with band structure calculations, we infer that CeRu$_4$Sn$_6$ is a strongly correlated material with non-trivial topology. Comment: 10 pages, 6 figures, submitted to Scientific Reports |
| Databáze: | OpenAIRE |
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