{"created":"2023-05-15T14:53:41.776084+00:00","id":73124,"links":{},"metadata":{"_buckets":{"deposit":"4c45f277-8caf-43ff-886f-45efd2bddaed"},"_deposit":{"created_by":1,"id":"73124","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"73124"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00073124","sets":["10:28"]},"author_link":["720607","720608","720606","720609"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2018-09-10","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"本研究では、局在的描像ではなく遍歴的描像から、NiGa2S4における上記の特徴的な磁気秩序を説明する。具体的には、第一原理バンド計算で求めたフェルミ準位近傍のバンドから、Ni-d軌道5本、S-p軌道12本に対応する17本の最局在ワニエ軌道を求めることで精密な17軌道の強束縛模型（dp模型）を作成し、それに平均場近似を適用して磁性を調べる。Ni-d軌道間のクーロン斥力がU=2eV、J=U/8、U’=U-2Jの弱相関領域で、Q ≈ (0.15, 0.15, 0) に対応する周期の磁気秩序（約1.2μB）が最安定となる。UやJを大きくした場合には、120度構造は安定とはならず、むしろQ ≈ 0の強磁性状態が安定となる結果を得る。","subitem_description_type":"Abstract"}]},"item_10005_description_6":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"日本物理学会2018年秋季大会 ","subitem_description_type":"Other"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"野村, 拓司"}],"nameIdentifiers":[{"nameIdentifier":"720606","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山本裕史"}],"nameIdentifiers":[{"nameIdentifier":"720607","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉井賢資"}],"nameIdentifiers":[{"nameIdentifier":"720608","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"野村 拓司","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"720609","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference object","resourceuri":"http://purl.org/coar/resource_type/c_c94f"}]},"item_title":"NiGa2S4における磁性相関の平均場理論","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"NiGa2S4における磁性相関の平均場理論"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-12-28"},"publish_date":"2018-12-28","publish_status":"0","recid":"73124","relation_version_is_last":true,"title":["NiGa2S4における磁性相関の平均場理論"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T19:32:36.908264+00:00"}