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Direct observation of spin-quadrupolar excitations in Sr2CoGe2O7 by high-field electron spin resonance
https://oist.repo.nii.ac.jp/records/348
https://oist.repo.nii.ac.jp/records/3484517c9e3-72d6-4dee-9560-92c10b016de0
名前 / ファイル | ライセンス | アクション |
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PhysRevB.96.214406 (3.2 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-03-30 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Direct observation of spin-quadrupolar excitations in Sr2CoGe2O7 by high-field electron spin resonance | |||||
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 | |||||
著者(英) |
Akaki, Mitsuru
× Akaki, Mitsuru× Yoshizawa, Daichi× Okutani, Akira× Kida, Takanori× Romhányi, Judit× Penc, Karlo× Hagiwara, Masayuki |
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書誌情報 |
en : Physical Review B 巻 96, 号 21, p. 214406, 発行日 2017-12-05 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Exotic spin-multipolar ordering in spin transition metal insulators has so far eluded unambiguous experimental observation. A less studied, but perhaps more feasible fingerprint of multipole character emerges in the excitation spectrum in the form of quadrupolar transitions. Such multipolar excitations are desirable as they can be manipulated with the use of light or electric field and can be captured by means of conventional experimental techniques. Here we study single crystals of multiferroic Sr2CoGe2O7 and observe a two-magnon spin excitation appearing above the saturation magnetic field in electron spin resonance (ESR) spectra. Our analysis of the selection rules reveals that this spin excitation mode does not couple to the magnetic component of the light, but it is excited by the electric field only, in full agreement with the theoretical calculations. Due to the nearly isotropic nature of Sr2CoGe2O7, we identify this excitation as a purely spin-quadrupolar two-magnon mode. | |||||
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 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2469-9969 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1103/PhysRevB.96.214406 | |||||
権利 | ||||||
権利情報 | ©2017 American Physical Society | |||||
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.96.214406 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |