{"created":"2023-05-15T14:59:42.816802+00:00","id":81022,"links":{},"metadata":{"_buckets":{"deposit":"dd6fe0e8-dc0b-4338-9400-36e6814bb465"},"_deposit":{"created_by":1,"id":"81022","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"81022"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00081022","sets":["10:28"]},"author_link":["902192","902194","902195","902196","902197","902193"],"item_10005_date_7":{"attribute_name":"発表年月日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2020-11-04","subitem_date_issued_type":"Issued"}]},"item_10005_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Positronium (Ps) is a quasi-stable bound system consisting of an electron and a positron. From the annihilation ratio of Ps decay, the spin polarization of electrons containing in Ps can be determined. Since Ps is formed only at a topmost surface region with a low-electron density, the spin polarization obtained by this method is not affected by the bulk condition. If the energy-resolved and spin-polarized Ps annihilation spectroscopy is available, one can obtain the spin-polarized electron density-of-states (DOS) associated with only the top-surface layer of materials. We have been developing SP-PsTOF apparatus for the energy-resolved and spin-polarized Ps annihilation spectroscopy.  From the SP-PsTOF spectrum obtained for a Ni film, the negative polarization near the Fermi level was obtained. This result is reproduced by a theoretical calculation. The SP-PsTOF method is expected to be most powerful tool for the study of materials for spintronics application.\n","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":"4th QST International Symposium -Innovation from Quantum Materials Science-","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":"Maekawa, Masaki"}],"nameIdentifiers":[{"nameIdentifier":"902192","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Miyashita, Atsumi"}],"nameIdentifiers":[{"nameIdentifier":"902193","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kawasuso, Atsuo"}],"nameIdentifiers":[{"nameIdentifier":"902194","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Maekawa, Masaki","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"902195","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Miyashita, Atsumi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"902196","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kawasuso, Atsuo","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"902197","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":"Development of spin-polarized positronium time-of-flight spectroscopy","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Development of spin-polarized positronium time-of-flight spectroscopy"}]},"item_type_id":"10005","owner":"1","path":["28"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-10-30"},"publish_date":"2020-10-30","publish_status":"0","recid":"81022","relation_version_is_last":true,"title":["Development of spin-polarized positronium time-of-flight spectroscopy"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:15:26.586822+00:00"}