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Three-dimensional organic Dirac-line materials due to nonsymmorphic symmetry: A data mining approach
Stockholms universitet, Nordiska institutet för teoretisk fysik (Nordita). KTH Royal Institute of Technology, Sweden.
Stockholms universitet, Nordiska institutet för teoretisk fysik (Nordita). KTH Royal Institute of Technology, Sweden.
Stockholms universitet, Nordiska institutet för teoretisk fysik (Nordita). KTH Royal Institute of Technology, Sweden.
Rekke forfattare: 42017 (engelsk)Inngår i: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 95, nr 4, artikkel-id 041103Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A datamining study of electronic Kohn-Sham band structures was performed to identify Dirac materials within the Organic Materials Database. Out of that, the three-dimensional organic crystal 5,6-bis(trifluoromethyl)-2-methoxy-1H-1,3-diazepine was found to host different Dirac-line nodes within the band structure. From a group theoretical analysis, it is possible to distinguish between Dirac-line nodes occurring due to twofold degenerate energy levels protected by the monoclinic crystalline symmetry and twofold degenerate accidental crossings protected by the topology of the electronic band structure. The obtained results can be generalized to all materials having the space group P2(1)/c (No. 14, C-2h(5)) by introducing three distinct topological classes.

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2017. Vol. 95, nr 4, artikkel-id 041103
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URN: urn:nbn:se:su:diva-140218DOI: 10.1103/PhysRevB.95.041103ISI: 000391855500002OAI: oai:DiVA.org:su-140218DiVA, id: diva2:1078988
Tilgjengelig fra: 2017-03-07 Laget: 2017-03-07 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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Geilhufe, R. MatthiasBorysov, Stanislav S.Balatsky, Alexander V.
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