Sundermann, Martin, Strigari, Fabio, Willers, Thomas, Winkler, Hannes, Prokofiev, Andrey, Ablett, James M., Rueff, Jean-Pascal ORCID: 0000-0003-3594-918X, Schmitz, Detlerg, Weschke, Eugen ORCID: 0000-0002-2141-0944, Sala, Marco Moretti ORCID: 0000-0002-9744-9976, Al-Zein, Ali, Tanaka, Arata ORCID: 0000-0001-8301-8502, Haverkort, Maurits W. ORCID: 0000-0002-7216-3146, Kasinathan, Deepa ORCID: 0000-0002-9063-6867, Tjeng, Liu Hao ORCID: 0000-0002-0595-9312, Paschen, Silke ORCID: 0000-0002-3796-0713 and Severing, Andrea ORCID: 0000-0002-9547-2742 (2015). CeRu4Sn6: a strongly correlated material with nontrivial topology. Sci Rep, 5. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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Abstract

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 CeRu4Sn6 is a strongly correlated material with non-trivial topology.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Sundermann, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Strigari, FabioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Willers, ThomasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Winkler, HannesUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Prokofiev, AndreyUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ablett, James M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rueff, Jean-PascalUNSPECIFIEDorcid.org/0000-0003-3594-918XUNSPECIFIED
Schmitz, DetlergUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Weschke, EugenUNSPECIFIEDorcid.org/0000-0002-2141-0944UNSPECIFIED
Sala, Marco MorettiUNSPECIFIEDorcid.org/0000-0002-9744-9976UNSPECIFIED
Al-Zein, AliUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tanaka, ArataUNSPECIFIEDorcid.org/0000-0001-8301-8502UNSPECIFIED
Haverkort, Maurits W.UNSPECIFIEDorcid.org/0000-0002-7216-3146UNSPECIFIED
Kasinathan, DeepaUNSPECIFIEDorcid.org/0000-0002-9063-6867UNSPECIFIED
Tjeng, Liu HaoUNSPECIFIEDorcid.org/0000-0002-0595-9312UNSPECIFIED
Paschen, SilkeUNSPECIFIEDorcid.org/0000-0002-3796-0713UNSPECIFIED
Severing, AndreaUNSPECIFIEDorcid.org/0000-0002-9547-2742UNSPECIFIED
URN: urn:nbn:de:hbz:38-383802
DOI: 10.1038/srep17937
Journal or Publication Title: Sci Rep
Volume: 5
Date: 2015
Publisher: NATURE PUBLISHING GROUP
Place of Publication: LONDON
ISSN: 2045-2322
Language: English
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
X-RAY-SCATTERING; KONDO; GAP; SPECTROSCOPY; SURFACE; STATE; SMB6; VALENCE; RUMultiple languages
Multidisciplinary SciencesMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/38380

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