WEKO3
アイテム
{"_buckets": {"deposit": "dd93f54a-8afe-4b9b-9cce-f10b98feef7d"}, "_deposit": {"created_by": 1, "id": "74807", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "74807"}, "status": "published"}, "_oai": {"id": "oai:repo.qst.go.jp:00074807", "sets": ["1"]}, "author_link": ["734185", "734183", "734190", "734192", "734186", "734189", "734193", "734182", "734188", "734187", "734191", "734184"], "item_8_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2019-03", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "12", "bibliographicPageEnd": "125127-7", "bibliographicPageStart": "125127-1", "bibliographicVolumeNumber": "99", "bibliographic_titles": [{"bibliographic_title": "Physical Review B"}]}]}, "item_8_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "Hyperhoneycomb iridate β-Li2IrO3 is a three-dimensional analog of two-dimensional honeycomb iridates, such as α-Li2IrO3, which recently appeared as another playground for the physics of Kitaev-type spin liquid. β-Li2IrO3 shows a noncollinear spiral ordering of spin-orbital-entangled Jeff = 1/2 moments at low temperatures below 38 K, which is known to be suppressed under a pressure of ∼2 GPa. In addition, a structural transition is observed at PS ∼ 4 GPa at room temperature. Using the neutron powder diffraction technique, the crystal structure in the high-pressure phase of β-Li2IrO3 above PS was refined, which indicates the formation of Ir2 dimers on the zigzag chains, with an Ir-Ir distance of ∼2.66 Å, even shorter than that of metallic Ir. We argue that the strong dimerization stabilizes the bonding molecular-orbital state comprising the two local dzx orbitals in the Ir-O2-Ir bond plane, which conflicts with the equal superposition of dxy, dyz, and dzx orbitals in the Jeff = 1/2 wave function produced by strong spin-orbit coupling. The results of resonant inelastic x-ray scattering measurements and the electronic structure calculations are fully consistent with the collapse of the Jeff = 1/2 state. The competition between the spin-orbital-entangled Jeff = 1/2 state and molecular-orbital formation is most likely universal in honeycomb-based Kitaev materials.", "subitem_description_type": "Abstract"}]}, "item_8_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "Americal Physical Society"}]}, "item_8_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.1103/PhysRevB.99.125127", "subitem_relation_type_select": "DOI"}}]}, "item_8_relation_17": {"attribute_name": "関連サイト", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.125127", "subitem_relation_type_select": "URI"}}]}, "item_8_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "2469-9950", "subitem_source_identifier_type": "ISSN"}]}, "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": "Takayama, T."}], "nameIdentifiers": [{"nameIdentifier": "734182", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Krajewska, A."}], "nameIdentifiers": [{"nameIdentifier": "734183", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "S. Gibbs, A."}], "nameIdentifiers": [{"nameIdentifier": "734184", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "N. Yaresko, A."}], "nameIdentifiers": [{"nameIdentifier": "734185", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Ishii, H."}], "nameIdentifiers": [{"nameIdentifier": "734186", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Yamaoka, H."}], "nameIdentifiers": [{"nameIdentifier": "734187", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Ishii, K."}], "nameIdentifiers": [{"nameIdentifier": "734188", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Hiraoka, N."}], "nameIdentifiers": [{"nameIdentifier": "734189", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "P. Funnell, N."}], "nameIdentifiers": [{"nameIdentifier": "734190", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "L. Bull, C."}], "nameIdentifiers": [{"nameIdentifier": "734191", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Takagi, H."}], "nameIdentifiers": [{"nameIdentifier": "734192", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Ishii, Kenji", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "734193", "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": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Pressure-induced collapse of the spin-orbital Mott state in the hyperhoneycomb iridate β-Li2IrO3", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Pressure-induced collapse of the spin-orbital Mott state in the hyperhoneycomb iridate β-Li2IrO3"}]}, "item_type_id": "8", "owner": "1", "path": ["1"], "permalink_uri": "https://repo.qst.go.jp/records/74807", "pubdate": {"attribute_name": "公開日", "attribute_value": "2018-08-16"}, "publish_date": "2018-08-16", "publish_status": "0", "recid": "74807", "relation": {}, "relation_version_is_last": true, "title": ["Pressure-induced collapse of the spin-orbital Mott state in the hyperhoneycomb iridate β-Li2IrO3"], "weko_shared_id": -1}
Pressure-induced collapse of the spin-orbital Mott state in the hyperhoneycomb iridate β-Li2IrO3
https://repo.qst.go.jp/records/74807
https://repo.qst.go.jp/records/748076a48851b-f6b8-4f72-93c8-35f9056d3197
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2018-08-16 | |||||
タイトル | ||||||
タイトル | Pressure-induced collapse of the spin-orbital Mott state in the hyperhoneycomb iridate β-Li2IrO3 | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Takayama, T.
× Takayama, T.× Krajewska, A.× S. Gibbs, A.× N. Yaresko, A.× Ishii, H.× Yamaoka, H.× Ishii, K.× Hiraoka, N.× P. Funnell, N.× L. Bull, C.× Takagi, H.× Ishii, Kenji |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Hyperhoneycomb iridate β-Li2IrO3 is a three-dimensional analog of two-dimensional honeycomb iridates, such as α-Li2IrO3, which recently appeared as another playground for the physics of Kitaev-type spin liquid. β-Li2IrO3 shows a noncollinear spiral ordering of spin-orbital-entangled Jeff = 1/2 moments at low temperatures below 38 K, which is known to be suppressed under a pressure of ∼2 GPa. In addition, a structural transition is observed at PS ∼ 4 GPa at room temperature. Using the neutron powder diffraction technique, the crystal structure in the high-pressure phase of β-Li2IrO3 above PS was refined, which indicates the formation of Ir2 dimers on the zigzag chains, with an Ir-Ir distance of ∼2.66 Å, even shorter than that of metallic Ir. We argue that the strong dimerization stabilizes the bonding molecular-orbital state comprising the two local dzx orbitals in the Ir-O2-Ir bond plane, which conflicts with the equal superposition of dxy, dyz, and dzx orbitals in the Jeff = 1/2 wave function produced by strong spin-orbit coupling. The results of resonant inelastic x-ray scattering measurements and the electronic structure calculations are fully consistent with the collapse of the Jeff = 1/2 state. The competition between the spin-orbital-entangled Jeff = 1/2 state and molecular-orbital formation is most likely universal in honeycomb-based Kitaev materials. | |||||
書誌情報 |
Physical Review B 巻 99, 号 12, p. 125127-1-125127-7, 発行日 2019-03 |
|||||
出版者 | ||||||
出版者 | Americal Physical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2469-9950 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1103/PhysRevB.99.125127 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.125127 |