{"created":"2021-03-01T06:05:49.698289+00:00","id":2134,"links":{},"metadata":{"_buckets":{"deposit":"eb4c123a-a236-441a-8cd2-d74dbe42db3f"},"_deposit":{"id":"2134","owners":[],"pid":{"revision_id":0,"type":"depid","value":"2134"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00002134","sets":["176:488:489","453:454"]},"item_5_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2002-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"Supplement","bibliographicPageEnd":"358","bibliographicPageStart":"356","bibliographicVolumeNumber":"71","bibliographic_titles":[{"bibliographic_title":"Journal of the Physical Society of Japan"},{"bibliographic_title":"Journal of the Physical Society of Japan","bibliographic_titleLang":"en"}]}]},"item_5_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"We study a two-band Hubbard model using the dynamical mean-field theory combined with the exact diagonalization method. At the electron density n = 2, a transition from a band-insulator to a correlated semimetal occurs when the on-site Coulomb interaction U is varied for a fixed value of the harge-transfer energy Δ. At low temperature, the correlated semimetal shows ferromagnetism or superconductivity. With increasing doping | n -2|, the ferromagnetic transition temperature rapidly decreases and finally becomes zero at a critical value of n. The second-order phase transition  occurs at high temperature, while a phase separation of ferromagnetic and paramagnetic states takes place at low temperature. The superconducting transition temperature gradually decreases and finally becomes zero near n = 1 (n = 3) where the system is Mott insulator which shows  antiferromagnetism at low temperature.","subitem_description_type":"Abstract"}]},"item_5_description_5":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Proceedings of the International Conference on Strongly Correlated Electrons with Orbital Degrees of Freedom (ORBITAL2001)","subitem_description_type":"Other"}]},"item_5_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"日本物理学会"}]},"item_5_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1143/JPSJS.71S.356","subitem_relation_type_select":"DOI"}}]},"item_5_relation_31":{"attribute_name":"異版である","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"http://journals.jps.jp/doi/abs/10.1143/JPSJS.71S.356","subitem_relation_type_select":"URI"}}]},"item_5_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright (C) 2002 The Physical Society of Japan"}]},"item_5_select_19":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"author"}]},"item_5_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA00704814","subitem_source_identifier_type":"NCID"}]},"item_5_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00319015","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Ono, Yoshiaki"}],"nameIdentifiers":[{"nameIdentifier":"62","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sano, Kazuhiro"}],"nameIdentifiers":[{"nameIdentifier":"7151","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-07-29"}],"displaytype":"detail","filename":"1022.pdf","filesize":[{"value":"141.6 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"1022.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/2134/files/1022.pdf"},"version_id":"b5474b72-5f1d-4f1f-8808-86a3cc2f23d3"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"two-band Hubbard model","subitem_subject_scheme":"Other"},{"subitem_subject":"metal-insulator transition","subitem_subject_scheme":"Other"},{"subitem_subject":"ferromagnetism","subitem_subject_scheme":"Other"},{"subitem_subject":"antiferromagnetism","subitem_subject_scheme":"Other"},{"subitem_subject":"super-conductivity","subitem_subject_scheme":"Other"},{"subitem_subject":"dynamical mean-field theory","subitem_subject_scheme":"Other"},{"subitem_subject":"infinite dimensions","subitem_subject_scheme":"Other"},{"subitem_subject":"exact diagonalization method","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Magnetism and Superconductivity in a Two-band Hubbard Model in Infinite Dimensions","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Magnetism and Superconductivity in a Two-band Hubbard Model in Infinite Dimensions"},{"subitem_title":"Magnetism and Superconductivity in a Two-band Hubbard Model in Infinite Dimensions","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["454","489"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-04-15"},"publish_date":"2014-04-15","publish_status":"0","recid":"2134","relation_version_is_last":true,"title":["Magnetism and Superconductivity in a Two-band Hubbard Model in Infinite Dimensions"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-15T03:34:56.784471+00:00"}