{"_buckets": {"deposit": "0040eaf4-cb6e-47d1-a350-6516028e3ae7"}, "_deposit": {"created_by": 1, "id": "73307", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "73307"}, "status": "published"}, "_oai": {"id": "oai:repo.qst.go.jp:00073307", "sets": ["27"]}, "author_link": ["722298", "722297", "722299"], "item_10005_date_7": {"attribute_name": "発表年月日", "attribute_value_mlt": [{"subitem_date_issued_datetime": "2017-08-14", "subitem_date_issued_type": "Issued"}]}, "item_10005_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "The S=1/2 kagome-lattice antiferromagnet is one of interesting frustrated quantum spin systems. The systems exhibit the quantum spin fluid behavior, which was proposed as an origin of the high-Tc superconductivity. The spin gap is an important physical quantity to characterize the spin fluid behavior. Whether the S=1/2 kagome-lattice antiferromagnet is gapless or has a finite spin gap, is still unsolved issue. Because any recently developped numerical calculation methods are not enough to determine it in the thermodynamic limit. Our large-scale numerical diazonalization up to 42-spin clusters and a finite-size scaling analysis indicated that the S=1/2 kagome-lattice antiferromagnet is gapless in the thremodynamic limit[1-3]. It is consistent with the U(1) Dirac spin liquid theory of the kagome-lattice antiferromagnet[4,5]. On the other hand, the density matrix renormalization group calculations supported the gapped Z2 topological spin liquid theory[6,7]. We propose one of better methods to determine whether the spin excitation is gapless or gapped, based on the finite-size scaling analysis of the spin susceptibility calculated by the numerical diagonalization. The present work indicates that the kagome-lattice antiferromagnet is gapless, as well as the triangular-lattice one.", "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": "28th International Conference on Low-Temperature Physics (LT28)", "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": "Sakai, Toru"}], "nameIdentifiers": [{"nameIdentifier": "722297", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Nakano, Hiroki"}], "nameIdentifiers": [{"nameIdentifier": "722298", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "坂井 徹", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "722299", "nameIdentifierScheme": "WEKO"}]}]}, "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": "conference object", "resourceuri": "http://purl.org/coar/resource_type/c_c94f"}]}, "item_title": "Quantum spin fluid behaviors of the kagome- and triangular-lattice antiferromagnets", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Quantum spin fluid behaviors of the kagome- and triangular-lattice antiferromagnets"}]}, "item_type_id": "10005", "owner": "1", "path": ["27"], "permalink_uri": "https://repo.qst.go.jp/records/73307", "pubdate": {"attribute_name": "公開日", "attribute_value": "2018-01-13"}, "publish_date": "2018-01-13", "publish_status": "0", "recid": "73307", "relation": {}, "relation_version_is_last": true, "title": ["Quantum spin fluid behaviors of the kagome- and triangular-lattice antiferromagnets"], "weko_shared_id": -1}