{"created":"2021-03-01T06:17:19.950545+00:00","id":784,"links":{},"metadata":{"_buckets":{"deposit":"d27e1e27-f305-4c5e-9fc5-551ecf06759a"},"_deposit":{"id":"784","owners":[],"pid":{"revision_id":0,"type":"depid","value":"784"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00000784","sets":["6:209:210","9:10:11"]},"item_2_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016-12-19","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"13810","bibliographicVolumeNumber":"7","bibliographic_titles":[{"bibliographic_title":"Nature communications"}]}]},"item_2_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Large spin-splitting in the conduction band and valence band of ferromagnetic semiconductors, predicted by the influential mean-field Zener model and assumed in many spintronic device proposals, has never been observed in the mainstream p-type Mn-doped ferromagnetic semiconductors. Here, using tunnelling spectroscopy in Esaki-diode structures, we report the observation of such a large spontaneous spin-splitting energy (31.7–50 meV) in the conduction band bottom of n-type ferromagnetic semiconductor (In,Fe)As, which is surprising considering the very weak s-d exchange interaction reported in several zinc-blende type semiconductors. The mean-field Zener model also fails to explain consistently the ferromagnetism and the spin-splitting energy of (In,Fe)As, because we found that the Curie temperature values calculated using the observed spin-splitting energies are much lower than the experimental ones by a factor of 400. These results urge the need for a more sophisticated theory of ferromagnetic semiconductors.","subitem_description_type":"Abstract"}]},"item_2_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"UTokyo Research掲載「スピン状態によって大きなエネルギー差が自発的に生ずるエネルギー帯構造を観測」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/study-picks-up-large-spontaneous-spin-splitting-in-the-energy-band-structure.html","subitem_description_type":"Other"},{"subitem_description":"UTokyo Research \"Study picks up large spontaneous spin splitting in the energy band structure\" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/study-picks-up-large-spontaneous-spin-splitting-in-the-energy-band-structure.html","subitem_description_type":"Other"}]},"item_2_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Springer Nature"}]},"item_2_relation_11":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1038/ncomms13810","subitem_relation_type_select":"DOI"}}]},"item_2_relation_25":{"attribute_name":"関係URI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/study-picks-up-large-spontaneous-spin-splitting-in-the-energy-band-structure.html","subitem_relation_type_select":"URI"}},{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/study-picks-up-large-spontaneous-spin-splitting-in-the-energy-band-structure.html","subitem_relation_type_select":"URI"}},{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://www.nature.com/articles/ncomms13810","subitem_relation_type_select":"URI"}}]},"item_2_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"© The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/"}]},"item_2_select_14":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_2_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12645905","subitem_source_identifier_type":"NCID"}]},"item_2_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2041-1723","subitem_source_identifier_type":"ISSN"}]},"item_2_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Department of Electrical Engineering and Information Systems, The University of Tokyo"},{"subitem_text_value":"Institute of Engineering Innovation, Graduate School of Engineering, The University of Tokyo"},{"subitem_text_value":"Department of Physical Electronics, Tokyo Institute of Technology"},{"subitem_text_value":"Center for Spintronics Research Network (CSRN), The University of Tokyo"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Anh, Le Duc"}],"nameIdentifiers":[{"nameIdentifier":"2999","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Hai, Pham Nam"}],"nameIdentifiers":[{"nameIdentifier":"3000","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tanaka, Masaaki"}],"nameIdentifiers":[{"nameIdentifier":"3001","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-05-30"}],"displaytype":"detail","filename":"ncomms13810.pdf","filesize":[{"value":"1.6 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"ncomms13810.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/784/files/ncomms13810.pdf"},"version_id":"9795082b-63ac-4079-b184-357c9e6bb017"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Electronic devices","subitem_subject_scheme":"Other"},{"subitem_subject":"Ferromagnetism","subitem_subject_scheme":"Other"},{"subitem_subject":"Spintronics","subitem_subject_scheme":"Other"}]},"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":"Observation of spontaneous spin-splitting in the band structure of an n-type zinc-blende ferromagnetic semiconductor","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Observation of spontaneous spin-splitting in the band structure of an n-type zinc-blende ferromagnetic semiconductor"}]},"item_type_id":"2","owner":"1","path":["11","210"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-01-05"},"publish_date":"2017-01-05","publish_status":"0","recid":"784","relation_version_is_last":true,"title":["Observation of spontaneous spin-splitting in the band structure of an n-type zinc-blende ferromagnetic semiconductor"],"weko_creator_id":"1","weko_shared_id":2},"updated":"2022-12-19T03:41:48.962398+00:00"}