{"created":"2021-03-01T06:05:49.001247+00:00","id":2123,"links":{},"metadata":{"_buckets":{"deposit":"18503cb9-fc8b-4453-8ba1-79d2bfe827d6"},"_deposit":{"id":"2123","owners":[],"pid":{"revision_id":0,"type":"depid","value":"2123"},"status":"published"},"_oai":{"id":"oai:niigata-u.repo.nii.ac.jp:00002123","sets":["176:488:489","453:454"]},"item_5_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2010-05","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"5","bibliographicPageEnd":"054707-7","bibliographicPageStart":"054707-1","bibliographicVolumeNumber":"79","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 investigate the two-orbital periodic Anderson model, where the local orbital fluctuations of f-electrons couple with a two-fold degenerate Jahn-Teller phonon, by using the dynamical mean-field theory. It is found that the heavy fermion state caused by the Coulomb interaction between f-electrons U is largely enhanced due to the electron-phonon coupling g, in contrast to the case with the single-orbital periodic Anderson model where the effects of U and g compete to each other. In the heavy fermion state for large U and g, both the orbital and lattice fluctuations are enhanced, while the charge (valence) and spin fluctuations are suppressed. In the strong coupling regime, a sharp soft phonon mode with a large spectral weight is observed for small U, while a broad soft phonon mode with a small spectral weight is observed for large U. The cooperative effect of U and g for half-filling with two f-electrons per atom nf = 2 is more pronounced than that for quarter-filling with nf = 1.","subitem_description_type":"Abstract"}]},"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/JPSJ.79.054707","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/JPSJ.79.054707","subitem_relation_type_select":"URI"}}]},"item_5_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright (C) 2010 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":"Mitsumoto, Keisuke"}],"nameIdentifiers":[{"nameIdentifier":"7121","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ono, Yoshiaki"}],"nameIdentifiers":[{"nameIdentifier":"62","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":"985.pdf","filesize":[{"value":"333.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"985.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/2123/files/985.pdf"},"version_id":"68d27a2e-0d4a-4b7b-8a8c-422fb51448af"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"heavy fermion","subitem_subject_scheme":"Other"},{"subitem_subject":"periodic Anderson model","subitem_subject_scheme":"Other"},{"subitem_subject":"orbital degeneracy","subitem_subject_scheme":"Other"},{"subitem_subject":"Coulomb interaction","subitem_subject_scheme":"Other"},{"subitem_subject":"electron-phonon coupling","subitem_subject_scheme":"Other"},{"subitem_subject":"Jahn-Teller phonon","subitem_subject_scheme":"Other"},{"subitem_subject":"dynamical mean-field theory","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":"Cooperative Effect of Coulomb Interaction and Electron-Phonon Coupling on the Heavy Fermion State in the Two-Orbital Periodic Anderson Model","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Cooperative Effect of Coulomb Interaction and Electron-Phonon Coupling on the Heavy Fermion State in the Two-Orbital Periodic Anderson Model"},{"subitem_title":"Cooperative Effect of Coulomb Interaction and Electron-Phonon Coupling on the Heavy Fermion State in the Two-Orbital Periodic Anderson Model","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":"2123","relation_version_is_last":true,"title":["Cooperative Effect of Coulomb Interaction and Electron-Phonon Coupling on the Heavy Fermion State in the Two-Orbital Periodic Anderson Model"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-15T03:34:57.872027+00:00"}