by Sundermann, Martin, Strigari, Fabio, Willers, Thomas, Winkler, Hannes, Prokofiev, Andrey, Ablett, James M., Rueff, Jean-Pascal, Schmitz, Detlerg, Weschke, Eugen, Sala, Marco Moretti and Al-Zein, Ali, Tanaka, Arata, Haverkort, Maurits W., Kasinathan, Deepa, Tjeng, Liu Hao, Paschen, Silke and Severing, Andrea
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.
Reference:
CeRu4Sn6: a strongly correlated material with nontrivial topology (Sundermann, Martin, Strigari, Fabio, Willers, Thomas, Winkler, Hannes, Prokofiev, Andrey, Ablett, James M., Rueff, Jean-Pascal, Schmitz, Detlerg, Weschke, Eugen, Sala, Marco Moretti and Al-Zein, Ali, Tanaka, Arata, Haverkort, Maurits W., Kasinathan, Deepa, Tjeng, Liu Hao, Paschen, Silke and Severing, Andrea), In SCIENTIFIC REPORTS, NATURE PUBLISHING GROUP, volume 5, 2015.
Bibtex Entry:
@article{ ISI:000366118600001, Author = {Sundermann, Martin and Strigari, Fabio and Willers, Thomas and Winkler, Hannes and Prokofiev, Andrey and Ablett, James M. and Rueff, Jean-Pascal and Schmitz, Detlerg and Weschke, Eugen and Sala, Marco Moretti and Al-Zein, Ali and Tanaka, Arata and Haverkort, Maurits W. and Kasinathan, Deepa and Tjeng, Liu Hao and Paschen, Silke and Severing, Andrea}, Title = {{CeRu4Sn6: a strongly correlated material with nontrivial topology}}, Journal = {{SCIENTIFIC REPORTS}}, Year = {{2015}}, Volume = {{5}}, Month = {{DEC 10}}, 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.}}, Publisher = {{NATURE PUBLISHING GROUP}}, Address = {{MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND}}, Type = {{Article}}, Language = {{English}}, Affiliation = {{Severing, A (Corresponding Author), Univ Cologne, Inst Phys 2, Zulpicher Str 77, D-50937 Cologne, Germany. Sundermann, Martin; Strigari, Fabio; Willers, Thomas; Severing, Andrea, Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany. Winkler, Hannes; Prokofiev, Andrey; Paschen, Silke, Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria. Ablett, James M.; Rueff, Jean-Pascal, LOrme Merisiers, Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France. Schmitz, Detlerg; Weschke, Eugen, Helmholtz Zentrum Berlin, BESSY 2, D-12489 Berlin, Germany. Sala, Marco Moretti; Al-Zein, Ali, European Synchrotron Radiat Facil, F-38043 Grenoble, France. Tanaka, Arata, ADSM Hiroshima Univ, Dept Quantum Matter, Higashihiroshima 7398530, Japan. Haverkort, Maurits W.; Kasinathan, Deepa; Tjeng, Liu Hao, Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany.}}, DOI = {{10.1038/srep17937}}, Article-Number = {{17937}}, ISSN = {{2045-2322}}, Keywords-Plus = {{X-RAY-SCATTERING; KONDO; GAP; SPECTROSCOPY; SURFACE; STATE; SMB6; VALENCE; RU}}, Research-Areas = {{Science & Technology - Other Topics}}, Web-of-Science-Categories = {{Multidisciplinary Sciences}}, Author-Email = {{severing@ph2.uni-koeln.de}}, ResearcherID-Numbers = {{Haverkort, Maurits W./D-2319-2009 Ablett, James M/N-9731-2018 Prokofiev, Andrey V./U-7517-2019 Tjeng, Liu Hao/B-8607-2019 Moretti, Marco/AAF-9255-2019 Zein, Ali Al/F-4393-2019 Kasinathan, Deepa/M-8825-2015 Rueff, Jean-Pascal/D-8938-2016 Sala, Marco Moretti/H-1034-2014 Tanaka, Arata/S-4466-2018 Paschen, Silke/C-3841-2014 Weschke, Eugen/J-4404-2013}}, ORCID-Numbers = {{Haverkort, Maurits W./0000-0002-7216-3146 Ablett, James M/0000-0003-2887-2903 Prokofiev, Andrey V./0000-0002-0577-3497 Tjeng, Liu Hao/0000-0002-0595-9312 Moretti, Marco/0000-0002-9744-9976 Kasinathan, Deepa/0000-0002-9063-6867 Rueff, Jean-Pascal/0000-0003-3594-918X Sala, Marco Moretti/0000-0002-9744-9976 Tanaka, Arata/0000-0001-8301-8502 Paschen, Silke/0000-0002-3796-0713 Weschke, Eugen/0000-0002-2141-0944}}, Funding-Acknowledgement = {{German funding agency DFGGerman Research Foundation (DFG) {[}600575, 615811]; Austrian Science FundAustrian Science Fund (FWF) {[}I623-N16]; U.S. Army Research Office {[}W911NF-14-1-0497]; Austrian Science Fund (FWF)Austrian Science Fund (FWF) {[}I 623, TRP 176] Funding Source: researchfish}}, Funding-Text = {{We thank K. Held, P. Thalmeier and D.T. Adroja for fruitful discussions and J. Haenel for cutting and polishing the single crystals. M.S., F.S, T.W. and A.S. benefited from support of the German funding agency DFG (Projects 600575 and 615811) and H.W., A.P. and S.P. from the Austrian Science Fund (Project I623-N16) and the U.S. Army Research Office (Grant W911NF-14-1-0497). We further acknowledge SOLEIL for provision of synchrotron radiation facilities (proposal 20120919).}}, Number-of-Cited-References = {{58}}, Times-Cited = {{23}}, Usage-Count-Last-180-days = {{1}}, Usage-Count-Since-2013 = {{76}}, Journal-ISO = {{Sci Rep}}, Doc-Delivery-Number = {{CY0TI}}, Unique-ID = {{ISI:000366118600001}}, OA = {{DOAJ Gold, Green Published}}, DA = {{2020-12-22}}, }
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