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High-field multifrequency electron-spin-resonance study of the Haldane magnet Ni(C5H14N2)(2)N-3(PF6)
https://sucra.repo.nii.ac.jp/records/13384
https://sucra.repo.nii.ac.jp/records/133845442dfbd-43d5-4d79-a30b-510f86dbbea3
名前 / ファイル | ライセンス | アクション |
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A1002829.pdf (1.2 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-02-26 | |||||
タイトル | ||||||
タイトル | High-field multifrequency electron-spin-resonance study of the Haldane magnet Ni(C5H14N2)(2)N-3(PF6) | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | antiferromagnetic materials | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | antiferromagnetic resonance | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | energy gap | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Heisenberg model | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | magnetic anisotropy | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | organic compounds | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | paramagnetic resonance | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | spin fluctuations | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | triplet state | |||||
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 |
Kashiwagi, T.
× Kashiwagi, T.× Hagiwara, M.× Kimura, S.× 本多, 善太郎× Miyazaki, H.× Harada, I.× Kindo, K. |
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著者 ローマ字 | ||||||
Kashiwagi, T. | ||||||
著者 ローマ字 | ||||||
Hagiwara, M. | ||||||
著者 ローマ字 | ||||||
Kimura, S. | ||||||
著者 ローマ字 | ||||||
Honda, Z. | ||||||
著者 ローマ字 | ||||||
Miyazaki, H. | ||||||
著者 ローマ字 | ||||||
Harada, I. | ||||||
著者 ローマ字 | ||||||
Kindo, K. | ||||||
著者 所属 | ||||||
著者 所属 | ||||||
著者 所属 | ||||||
著者 所属 | ||||||
埼玉大学大学院理工学研究科物質科学部門 | ||||||
著者 所属(別言語) | ||||||
著者 所属(別言語) | ||||||
著者 所属(別言語) | ||||||
著者 所属(別言語) | ||||||
Graduate School of Science and Engineering, Saitama University | ||||||
書誌情報 |
PHYSICAL REVIEW B 巻 79, 号 2, p. 024403-1-024403-12, 発行日 2009 |
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年月次 | ||||||
2009-1 | ||||||
出版者名 | ||||||
出版者 | American Physical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 10980121 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1103/PhysRevB.79.024403 | |||||
関連サイト | ||||||
内容記述タイプ | Other | |||||
内容記述 | http://link.aps.org/doi/10.1103/PhysRevB.79.024403 | http://link.aps.org/doi/10.1103/PhysRevB.79.024403 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In order to understand physical properties of the field-induced phase of a spin-gap system, we performed high-field and multifrequency electron-spin-resonance (ESR) measurements on single crystals of the S=1 quasi-one-dimensional Heisenberg antiferromagnet, namely, the Haldane magnet, Ni(C5H14N2)(2)N-3(PF6), abbreviated as NDMAP. This compound has an energy gap (Haldane gap) at zero field and one of the excited triplet branches goes down on applying magnetic fields, resulting in the gap closing at a critical field H-c around 5 T that is slightly different depending on the field direction. First, we studied the angular dependence of spin excitations below 14 T. Two sets of resonance modes caused by two types of Ni2+ chains in NDMAP are observed. These data are analyzed by comparing with a phenomenological field theory (PFT). The experimental results between H-c and about 12 T are well fitted with the calculated ones by the PFT, but the fitting above 12 T is not satisfactory. Therefore, we studied spin excitations at much higher magnetic fields up to about 55 T. Several ESR signals are observed above H-c for each crystallographic axis, and one or two of them survive in the high-field region above about 15 T. One mode approaches a paramagnetic resonance line at high fields and the other mode broadly changes with magnetic fields. These modes fit well with the conventional antiferromagnetic resonance modes with biaxial anisotropy. This result suggests that the quantum fluctuations are suppressed by strong magnetic field and the spin excitations change from a quantum nature to a classical one in high magnetic fields. | |||||
版 | ||||||
[出版社版] | ||||||
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 | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | text | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
作成日 | ||||||
日付 | 2009-02-26 | |||||
日付タイプ | Created | |||||
アイテムID | ||||||
A1002829 |