{"created":"2023-05-15T14:53:50.112026+00:00","id":73307,"links":{},"metadata":{"_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":["10:27"]},"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"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-01-13"},"publish_date":"2018-01-13","publish_status":"0","recid":"73307","relation_version_is_last":true,"title":["Quantum spin fluid behaviors of the kagome- and triangular-lattice antiferromagnets"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T19:30:46.266576+00:00"}