{"_buckets": {"deposit": "64643435-4581-40b2-8a53-8e0387022447"}, "_deposit": {"id": "2257", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "2257"}, "status": "published"}, "_oai": {"id": "oai:niigata-u.repo.nii.ac.jp:00002257"}, "item_5_biblio_info_6": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2007-09", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "Part 2", "bibliographicPageEnd": "1048", "bibliographicPageStart": "1047", "bibliographicVolumeNumber": "460-462", "bibliographic_titles": [{"bibliographic_title": "Physica. C, Superconductivity"}, {"bibliographic_title": "Physica. C, Superconductivity", "bibliographic_titleLang": "en"}]}]}, "item_5_description_4": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "We investigate the electronic state of the 11 band d\u2013p model on the two-dimensional triangular lattice simulating a CoO2 plane in the layered cobalt oxides such as NaxCoO2 and NaxCoO2 \u00b7 yH2O. The tight-binding parameters are determined so as to fit the LDA band structure. Using the slave boson approach together with the 1/N expansion method, we obtain the renormalized quasiparticle bands, where the a1g band with a large hole Fermi surface is largely renormalized due to the strong correlation effect, while the eg\u0027 bands with six hole pockets are almost unchanged. We also discuss the metal\u2013insulator transition (MIT) with varying the d\u2013p charge transfer energy \u0394, and find that the MIT takes place at a critical value \u0394c = 4.01 eV.", "subitem_description_type": "Abstract"}]}, "item_5_publisher_7": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "Elsevier"}]}, "item_5_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "info:doi/10.1016/j.physc.2007.03.212", "subitem_relation_type_select": "DOI"}}]}, "item_5_select_19": {"attribute_name": "\u8457\u8005\u7248\u30d5\u30e9\u30b0", "attribute_value_mlt": [{"subitem_select_item": "author"}]}, "item_5_source_id_11": {"attribute_name": "\u66f8\u8a8c\u30ec\u30b3\u30fc\u30c9ID", "attribute_value_mlt": [{"subitem_source_identifier": "AA11461984", "subitem_source_identifier_type": "NCID"}]}, "item_5_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "09214534", "subitem_source_identifier_type": "ISSN"}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Ono, Yoshiaki"}], "nameIdentifiers": [{"nameIdentifier": "62", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "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": "1001.pdf", "filesize": [{"value": "170.4 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 170400.0, "url": {"label": "1001.pdf", "url": "https://niigata-u.repo.nii.ac.jp/record/2257/files/1001.pdf"}, "version_id": "fcc3a317-84ba-430a-bdad-70326bbf1eb3"}]}, "item_keyword": {"attribute_name": "\u30ad\u30fc\u30ef\u30fc\u30c9", "attribute_value_mlt": [{"subitem_subject": "NaxCoO2", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Triangular lattice d\u2013p model", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Metal\u2013insulator transition", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Slave boson", "subitem_subject_scheme": "Other"}, {"subitem_subject": "1/N expansion", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Electronic states and metal-insulator transition in the triangular lattice d-p model for layered cobaltates", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "Electronic states and metal-insulator transition in the triangular lattice d-p model for layered cobaltates"}, {"subitem_title": "Electronic states and metal-insulator transition in the triangular lattice d-p model for layered cobaltates", "subitem_title_language": "en"}]}, "item_type_id": "5", "owner": "1", "path": ["453/454", "176/488/489"], "permalink_uri": "http://hdl.handle.net/10191/26912", "pubdate": {"attribute_name": "\u516c\u958b\u65e5", "attribute_value": "2014-04-16"}, "publish_date": "2014-04-16", "publish_status": "0", "recid": "2257", "relation": {}, "relation_version_is_last": true, "title": ["Electronic states and metal-insulator transition in the triangular lattice d-p model for layered cobaltates"], "weko_shared_id": null}