{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360004236127946112.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1140/epjb/e2009-00020-0"}},{"identifier":{"@type":"URI","@value":"http://link.springer.com/content/pdf/10.1140/epjb/e2009-00020-0.pdf"}},{"identifier":{"@type":"URI","@value":"http://link.springer.com/article/10.1140/epjb/e2009-00020-0/fulltext.html"}},{"identifier":{"@type":"URI","@value":"http://link.springer.com/content/pdf/10.1140/epjb/e2009-00020-0"}},{"identifier":{"@type":"DOI","@value":"10.48550/arxiv.0806.4025"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Electronic properties close to Dirac cone in two-dimensional organic conductor α-(BEDT-TTF)2I3"}],"description":[{"notation":[{"@value":"A zero-gap state (ZGS) has been found in a bulk system of two-dimensional organic conductor, $��$-(BEDT-TTF)$_2$I$_3$ salt which consists of four sites of donor molecules in a unit cell. In the present paper, the characteristic of the ZGS is analyzed in detail and the electronic properties are examined in the vicinity of the contact point where the conduction and valence bands degenerate to form the zero-gap. The eigenvectors of the energy band have four components of respective sites, where two of them correspond to inequivalent sites and the other two correspond to equivalent sites. It is shown that the former exhibits an exotic momentum dependence around the contact point and the latter shows almost a constant dependence. The density of states of each site close to the Fermi point is calculated to demonstrate the temperature dependence of the local magnetic susceptibility and the local nuclear magnetic relaxation rate. Further, the robust property of the ZGS against the anion potential is also shown by using the second-order perturbation."}]},{"notation":[{"@value":"10 pages, 10 figures"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004236127946112","@type":"Researcher","foaf:name":[{"@value":"S. Katayama"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004236127946113","@type":"Researcher","foaf:name":[{"@value":"A. Kobayashi"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004236127946114","@type":"Researcher","foaf:name":[{"@value":"Y. Suzumura"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"14346028"},{"@type":"EISSN","@value":"14346036"}],"prism:publicationName":[{"@value":"The European Physical Journal B"}],"dc:publisher":[{"@value":"Springer Science and Business Media LLC"}],"prism:publicationDate":"2009-01","prism:volume":"67","prism:number":"2","prism:startingPage":"139","prism:endingPage":"148"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["http://www.springer.com/tdm"],"url":[{"@id":"http://link.springer.com/content/pdf/10.1140/epjb/e2009-00020-0.pdf"},{"@id":"http://link.springer.com/article/10.1140/epjb/e2009-00020-0/fulltext.html"},{"@id":"http://link.springer.com/content/pdf/10.1140/epjb/e2009-00020-0"}],"createdAt":"2009-01-23","modifiedAt":"2019-11-05","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Condensed%20Matter%20-%20Strongly%20Correlated%20Electrons","dc:title":"Condensed Matter - Strongly Correlated Electrons"},{"@id":"https://cir.nii.ac.jp/all?q=Strongly%20Correlated%20Electrons%20(cond-mat.str-el)","dc:title":"Strongly Correlated Electrons (cond-mat.str-el)"},{"@id":"https://cir.nii.ac.jp/all?q=FOS:%20Physical%20sciences","dc:title":"FOS: Physical sciences"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040000782027696128","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"20110002"},{"@type":"JGN","@value":"JP20110002"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-20110002/"}],"notation":[{"@language":"ja","@value":"分子配列自由度を利用した新規電子相の開拓"},{"@language":"en","@value":"Exploration of novel electronic phases using molecular-arrangement degrees of freedom"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050845763735792512","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Topological Domain Wall and Valley Hall Effect in Charge Ordered 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