{"_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": ["454", "489"]}, "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", "download_preview_message": "", "file_order": 0, "filename": "1022.pdf", "filesize": [{"value": "141.6 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 141600.0, "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"], "permalink_uri": "http://hdl.handle.net/10191/26842", "pubdate": {"attribute_name": "公開日", "attribute_value": "2014-04-15"}, "publish_date": "2014-04-15", "publish_status": "0", "recid": "2134", "relation": {}, "relation_version_is_last": true, "title": ["Magnetism and Superconductivity in a Two-band Hubbard Model in Infinite Dimensions"], "weko_shared_id": null}