{"created":"2023-05-15T12:35:41.868651+00:00","id":4713,"links":{},"metadata":{"_buckets":{"deposit":"cd95b6ab-006b-4584-9b53-65976a679b87"},"_deposit":{"created_by":3,"id":"4713","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"4713"},"status":"published"},"_oai":{"id":"oai:nitech.repo.nii.ac.jp:00004713","sets":["31"]},"author_link":["15074","8700","14547","14537","15078","13095"],"item_10001_biblio_info_28":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1999-07-15","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"2100","bibliographicPageStart":"2093","bibliographicVolumeNumber":"60","bibliographic_titles":[{"bibliographic_title":"PHYSICAL REVIEW B"}]}]},"item_10001_description_36":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"We have fabricated CoO-coated monodispersive Co cluster assemblies with the mean cluster size of 13 nm at various oxygen gas-flow rate RO2 by a plasma-gas-condensation-type cluster beam deposition technique, and studied their electrical conductivity, σ, and magnetoresistance. For RO2<0.24 SCCM (sccm denotes cubic centimeter per minute), the resistivity revealed a minimum and showed In T dependence at lower temperatures, probably due to the weak localization of conduction electrons owing to presence of thin oxide shells covering Co cores. A small negative magnetoresistance was observed in this regime. For RO2>0.3 SCCM, tunnel-type temperature dependence of σ in the form of ln σ vs 1/T was observed between 7 and 80 K. This differs from the well-known temperature dependence of ln σ vs 1/T1/2 for disordered granular materials. The magnetoresistance ratio, (ρH=30 kOe-ρ0)/ρ0, is negative and its absolute value increases sharply with decreasing temperature below 25 K: from 3.5% at 25 K to 20.5% at 4.2 K. This marked increase, by a factor of 6, is much larger than those observed for conventional metal-insulator granular systems. These results are ascribed to a prominent cotunneling effect in the Coulomb blockade regime, arising from the uniform Co  core size and CoO shell thickness in the present monodispersed cluster assemblies.","subitem_description_type":"Other"}]},"item_10001_description_38":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_10001_full_name_27":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{}],"names":[{"name":"隅山, 兼治"}]},{"nameIdentifiers":[{},{}],"names":[{"name":"日原, 岳彦"}]}]},"item_10001_publisher_29":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"American Physical Society"}]},"item_10001_source_id_30":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"10980121","subitem_source_identifier_type":"ISSN"}]},"item_10001_source_id_32":{"attribute_name":"書誌レコードID（NCID）","attribute_value_mlt":[{"subitem_source_identifier":"AA11187113","subitem_source_identifier_type":"NCID"}]},"item_10001_version_type_33":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Peng, D. L.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sumiyama, Kenji","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Konno, T. J.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hihara, Takehiko","creatorNameLang":"en"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"Yamamuro, S.","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-01-24"}],"displaytype":"detail","filename":"PRB 60_2093.pdf","filesize":[{"value":"485.2 kB"}],"format":"application/pdf","license_note":"(c)1999 The American Physical Society","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"本文_fulltext","url":"https://nitech.repo.nii.ac.jp/record/4713/files/PRB 60_2093.pdf"},"version_id":"3a8deb4f-2b68-4e92-9f5c-39a7bf8bc330"}]},"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":"Characteristic transport properties of CoO-coated monodispersive Co cluster assemblies","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Characteristic transport properties of CoO-coated monodispersive Co cluster assemblies","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"3","path":["31"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-11-06"},"publish_date":"2012-11-06","publish_status":"0","recid":"4713","relation_version_is_last":true,"title":["Characteristic transport properties of CoO-coated monodispersive Co cluster assemblies"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-05-15T14:52:30.880918+00:00"}