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Ordering of hidden pseudo-dipolar moments in spin-orbital entangled 5d1 Ta chlorides
https://repo.qst.go.jp/records/76456
https://repo.qst.go.jp/records/7645620b81897-6b4e-49cd-aea8-3a2b4d97cc9a
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-07-23 | |||||
| タイトル | ||||||
| タイトル | Ordering of hidden pseudo-dipolar moments in spin-orbital entangled 5d1 Ta chlorides | |||||
| 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 |
Ishikawa, Hajime
× Ishikawa, Hajime× Takayama, Tomohiro× K. Kremer, Reinhard× Nuss, Juergen× Dinnebier, Robert× Kitagawa, Kentaro× Ishii, Kenji× Takagi, Hidenori× Ishii, Kenji |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Spin-orbit coupling of as large as a half eV for electrons in 5d orbitals often gives rise to the formation of spin-orbital entangled objects, with the effective total angular momentum Jeff. Of particular interest are the Jeff = 3/2 states realized in 5d1 transition metal ions surrounded by an anion octahedron. The pure Jeff = 3/2 quartet does not have any magnetic dipolar moment (⟨M⟩ = 0) but hosts hidden pseudodipolar moments accompanied by charge quadrupoles and magnetic octupoles. Cs2TaCl6 and Rb2TaCl6 are correlated insulators with 5d1 Ta4+ ions in a regular Cl octahedron. Here we demonstrate that these Ta chlorides indeed have a substantially suppressed effective magnetic dipolar moment of ∼0.2 μB . Two phase transitions are observed at low temperatures that are not pronounced in the magnetization but accompanied with large electronic entropy of ∼Rln4. We ascribe the two transitions to the ordering of hidden multipoles. | |||||
| 書誌情報 |
Physical Review B 巻 100, 号 4, p. 045142-1045142-1-045142-9, 発行日 2019-09 |
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| 出版者 | ||||||
| 出版者 | American 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.100.045142 | |||||
| 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.100.045142 | |||||
