Discovery of Dirac Node Arcs in PtSn4 Canfield, Paul Kaminski, Adam Canfield, Paul Bud'ko, Serguei Johnson, Duane Mou, Daixiang Mun, Eundeok Wu, Yun Huang, Lunan Lee, Yongbin Johnson, Duane Wang, Linlin
dc.contributor.department Ames Laboratory 2018-02-17T14:14:07.000 2020-06-29T23:18:14Z 2020-06-29T23:18:14Z 2016-03-04 2016-01-01
dc.description.abstract <p>In topological quantum materials the conduction and valence bands are connected at points (Dirac/Weyl semimetals) or along lines (Line Node semimetals) in the momentum space. Numbers of studies demonstrated that several materials are indeed Dirac/Weyl semimetals. However, there is still no experimental confirmation of materials with line nodes, in which the Dirac nodes form closed loops in the momentum space. Here we report the discovery of a novel topological structure - Dirac node arcs - in the ultrahigh magnetoresistive material PtSn4 using laser-based angle-resolved photoemission spectroscopy (ARPES) data and density functional theory (DFT) calculations. Unlike the closed loops of line nodes, the Dirac node arc structure resembles the Dirac dispersion in graphene hat is extended along one dimension in momentum space and confined by band gaps on either end. We propose that this reported Dirac node arc structure is a novel topological state that provides a novel platform for studying the exotic properties of Dirac Fermions.</p>
dc.format.mimetype .zip, .txt
dc.identifier archive/
dc.identifier.articleid 1001
dc.identifier.contextkey 8265108
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_datasets/2
dc.language.iso English
dc.source.bitstream archive/|||Fri Jan 14 22:06:10 UTC 2022
dc.source.uri 10.17039/ameslab.dmse.2016.DS3/1240853
dc.subject.disciplines Condensed Matter Physics
dc.subject.keywords Topological Quantum Matter
dc.subject.keywords Dirac Fermions
dc.title Discovery of Dirac Node Arcs in PtSn4
dc.type article
dc.type.genre dataset
dspace.entity.type Publication
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relation.isAuthorOfPublication ed24845f-863f-4613-9f76-130602a21b4a
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
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