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Data Mining for Three-Dimensional Organic Dirac Materials: Focus on Space Group 19
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Los Alamos National Laboratory, USA; ETH Institute for Theoretical Studies, Switzerland.
Number of Authors: 4
2017 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 7, 7298Article in journal (Refereed) Published
Abstract [en]

We combined the group theory and data mining approach within the Organic Materials Database that leads to the prediction of stable Dirac-point nodes within the electronic band structure of three-dimensional organic crystals. We find a particular space group P2(1)2(1)2(1) (#19) that is conducive to the Dirac nodes formation. We prove that nodes are a consequence of the orthorhombic crystal structure. Within the electronic band structure, two different kinds of nodes can be distinguished: 8-fold degenerate Dirac nodes protected by the crystalline symmetry and 4-fold degenerate Dirac nodes protected by band topology. Mining the Organic Materials Database, we present band structure calculations and symmetry analysis for 6 previously synthesized organic materials. In all these materials, the Dirac nodes are well separated within the energy and located near the Fermi surface, which opens up a possibility for their direct experimental observation.

Place, publisher, year, edition, pages
2017. Vol. 7, 7298
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-147107DOI: 10.1038/s41598-017-07374-7ISI: 000406980800037PubMedID: 28779142OAI: oai:DiVA.org:su-147107DiVA: diva2:1148500
Available from: 2017-10-11 Created: 2017-10-11 Last updated: 2017-10-11Bibliographically approved

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