{"created":"2023-05-15T15:23:32.408882+00:00","id":10397,"links":{},"metadata":{"_buckets":{"deposit":"83912ddf-1449-47e7-ab10-b041a448d513"},"_deposit":{"created_by":15,"id":"10397","owners":[15],"pid":{"revision_id":0,"type":"depid","value":"10397"},"status":"published"},"_oai":{"id":"oai:sucra.repo.nii.ac.jp:00010397","sets":["94:429:431:432:508"]},"author_link":[],"item_113_alternative_title_1":{"attribute_name":"タイトル（別言語）","attribute_value_mlt":[{"subitem_alternative_title":"層状有機導体における臨界現象の研究"}]},"item_113_biblio_info_9":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016","bibliographicIssueDateType":"Issued"}}]},"item_113_date_35":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2016-12-14","subitem_date_issued_type":"Created"}]},"item_113_date_granted_20":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2016-03-24"}]},"item_113_degree_grantor_22":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_name":"埼玉大学"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"12401","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_113_degree_name_21":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士(理学)"}]},"item_113_description_13":{"attribute_name":"形態","attribute_value_mlt":[{"subitem_description":"74p, viii","subitem_description_type":"Other"}]},"item_113_description_23":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Over several decades, the strongly correlated system is one of the most attractive target systems for solid state physicist because of numerous physical properties they show. Since the strongly correlated system shows various states, the electrons with strong correlation are performing the most important role in such system. One of the best stages to investigate the effect of electronic correlation is the organic system because of its simpleness. In addition to that, the most part of organic material with strong correlation can be facilitated by chemical reaction, which leads to low-impurity samples which helps us to perform precise measurements.\n The purpose of this research is to put a detailed investigation on the criticality of transitions on molecule-based strong correlation system,κ-(BEDT-TTF)2X. This system is known to show superconducting, magnetic and Mott transition. The criticalities of these three transitions are strongly related to fundamental questions in the field of solid state physics. However, the investigation of the criticality is not reported with a few exceptions.\n In this dissertation, we report experimental results for these criticalities by μSR and magnetisation measurements. We succeed in clarifying several points such as i) Critical exponent of Mott transition in quasi-two-dimensional system probed by thermodynamic quantity, ii) Criticality of true (zero-field) magnetic ordering inκ-(BEDT-TTF)2X, and iii) Criticality of superconducting fluctuation which can be regarded as a precursor of superconductivity. Among them, we found that the Mott transition in this system has critical exponents which never observed by thermodynamic quantity, and that agrees to the theoretical prediction of quantum-Mott transition. This behaviour considered as a result of the low-temperature critical endpoint. In addition to that, we discovered that superconducting fluctuation (SCF) in this system has a rapid-growth nature which is an important clue to clarify its origin. We also find that magnetic ordering temperature in κ-(BEDT-TTF)2X shows intriguing behaviour while the system approaches to Mott transition, which may suggest the dipolar interaction as an origin of magnetic ordering.","subitem_description_type":"Abstract"}]},"item_113_description_24":{"attribute_name":"目次","attribute_value_mlt":[{"subitem_description":"Contents\n1 Introduction 7\n1.1 Organic Conductor System κ-(BEDT-TTF)2X . . . . . . . . . . . 7\n1.2 Mott Transition . . . . . . . . . . . . . . . . . . . . . . . . . . . 13\n1.3 Antiferromagnetic Transition . . . . . . . . . . . . . . . . . . . . 15\n1.4 Superconducting fluctuation . . . . . . . . . . . . . . . . . . . . 17\n2 Experiments 19\n2.1 Magnetisation Measurement . . . . . . . . . . . . . . . . . . . . 19\n2.2 Helium-gas Pressurise Technique . . . . . . . . . . . . . . . . . . 22\n2.3 Muon Spin Relaxation/Rotation Measurement . . . . . . . . . . . 24\n3 Results for Mott transition 30\n3.1 Measurement under ambient pressure . . . . . . . . . . . . . . . 30\n3.2 Measurement under pressure I――Phase Diagram . . . . . . . . . . 32\n3.3 Measurement under pressure II――Criticality of Mott transition . . 37\n4 Results for Antiferromagnetic Transition 40\n4.1 κ-(BEDT-TTF)2Cu[N(CN)2]Cl . . . . . . . . . . . . . . . . . . . 40\n4.2 κ-(d8-BEDT-TTF)2Cu[N(CN)2]Br . . . . . . . . . . . . . . . . . 46\n4.3 κ-(d8-BEDT-TTF)2Cu[N(CN)2]Cl . . . . . . . . . . . . . . . . . 53\n5 Results for superconducting fluctuation 64\n5.1 κ-(BEDT-TTF)2Cu[N(CN)2]Br . . . . . . . . . . . . . . . . . . . 64\n5.2 Pressurised κ-(BEDT-TTF)2Cu[N(CN)2]Cl . . . . . . . . . . . . 69\n6 Remarks 74\nA Appendix i\nA.1 Muon site estimation . . . . . . . . . . . . . . . . . . . . . . . . i\nReferences xiii","subitem_description_type":"Other"}]},"item_113_description_25":{"attribute_name":"注記","attribute_value_mlt":[{"subitem_description":"指導教員 : 谷口弘三","subitem_description_type":"Other"}]},"item_113_description_33":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"text","subitem_description_type":"Other"}]},"item_113_description_34":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_113_dissertation_number_19":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第1010号"}]},"item_113_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24561/00010391","subitem_identifier_reg_type":"JaLC"}]},"item_113_publisher_11":{"attribute_name":"出版者名","attribute_value_mlt":[{"subitem_publisher":"埼玉大学大学院理工学研究科"}]},"item_113_publisher_12":{"attribute_name":"出版者名（別言語）","attribute_value_mlt":[{"subitem_publisher":"Graduate School of Science and Engineering, Saitama University"}]},"item_113_record_name_8":{"attribute_name":"書誌","attribute_value_mlt":[{"subitem_record_name":"博士論文（埼玉大学大学院理工学研究科（博士後期課程））"}]},"item_113_text_3":{"attribute_name":"著者 ローマ字","attribute_value_mlt":[{"subitem_text_value":"UEHARA, Tomotaka"}]},"item_113_text_31":{"attribute_name":"版","attribute_value_mlt":[{"subitem_text_value":"[出版社版]"}]},"item_113_text_36":{"attribute_name":"アイテムID","attribute_value_mlt":[{"subitem_text_value":"GD0000746"}]},"item_113_text_4":{"attribute_name":"著者 所属","attribute_value_mlt":[{"subitem_text_value":"埼玉大学大学院理工学研究科（博士後期課程）理工学専攻"}]},"item_113_text_5":{"attribute_name":"著者 所属（別言語）","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Science and Engineering, Saitama University"}]},"item_113_version_type_32":{"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_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"上原, 友敬","creatorNameLang":"ja"},{"creatorName":"ウエハラ, トモタカ","creatorNameLang":"ja-Kana"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-01-23"}],"displaytype":"detail","filename":"GD0000746.pdf","filesize":[{"value":"4.8 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"GD0000746.pdf","objectType":"fulltext","url":"https://sucra.repo.nii.ac.jp/record/10397/files/GD0000746.pdf"},"version_id":"8355abe6-c718-4c1b-8d19-ec637849adae"}]},"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":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_title":"Study of Critical Behaviour on Layered Organic Conductors","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Study of Critical Behaviour on Layered Organic Conductors","subitem_title_language":"en"}]},"item_type_id":"113","owner":"15","path":["508"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2016-12-14"},"publish_date":"2016-12-14","publish_status":"0","recid":"10397","relation_version_is_last":true,"title":["Study of Critical Behaviour on Layered Organic Conductors"],"weko_creator_id":"15","weko_shared_id":-1},"updated":"2023-06-23T03:11:01.658168+00:00"}