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Spin state ordering of strongly correlating LaCoO3 induced at ultrahigh magnetic fields
http://hdl.handle.net/2261/59476
http://hdl.handle.net/2261/59476495b9326-7839-4c97-a564-e88470e786f7
名前 / ファイル | ライセンス | アクション |
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PhysRevB.93.220401.pdf (539.5 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-01-16 | |||||
タイトル | ||||||
タイトル | Spin state ordering of strongly correlating LaCoO3 induced at ultrahigh magnetic fields | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
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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 |
Ikeda, Akihiko
× Ikeda, Akihiko× Nomura, Toshihiro× Matsuda, Yasuhiro H.× Matsuo, Akira× Kindo, Koichi× Sato, Keisuke |
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著者所属 | ||||||
値 | Institute for Solid State Physics, University of Tokyo | |||||
著者所属 | ||||||
値 | Ibaraki National College of Technology, Department of Natural Science | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Magnetization measurements of LaCoO3 have been carried out up to 133 T, generated with a destructive pulse magnet at a wide temperature range from 2 to 120 K. A novel magnetic transition was found atB > 100 T and T >T * = 32 ± 5 K, which is characterized by its transition field increasing with increasing temperature. At T <T*, the previously reported transition at B ∼ 65 T was observed. Based on the obtained B-T phase diagram and the Clausius-Clapeyron relation, the entropy of the high-field phase at 80 K is found to be smaller for about 1.5 J K-1 mol-1 than that of the low-field phase.We suggest that the observed two high-field phasesmay originate in different spatial orders of the spin states and possibly other degrees of freedom such as orbitals. An inherent strong correlation of spin states among cobalt sites should have triggered the emergence of the ordered phases in LaCoO3 at high magnetic fields. | |||||
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内容記述タイプ | Other | |||||
内容記述 | UTokyo Research掲載「半世紀に渡るコバルト酸化物の謎を解き明かす」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/solving-the-problem-of-half-a-century-over-cobalt-oxides.html | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | UTokyo Research "Solving the problem of half a century over cobalt oxides" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/solving-the-problem-of-half-a-century-over-cobalt-oxides.html | |||||
書誌情報 |
Physical Review B 巻 93, 号 22, 発行日 2016-06-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1550235X | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1103/PhysRevB.93.220401 | |||||
権利 | ||||||
権利情報 | © 2016 American Physical Society | |||||
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値 | publisher | |||||
出版者 | ||||||
出版者 | American Physical Society | |||||
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関連タイプ | isReferencedBy | |||||
識別子タイプ | URI | |||||
関連識別子 | https://www.u-tokyo.ac.jp/focus/ja/articles/a_00494.html | |||||
関係URI | ||||||
関連タイプ | isReferencedBy | |||||
識別子タイプ | URI | |||||
関連識別子 | https://www.u-tokyo.ac.jp/focus/en/articles/a_00485.html | |||||
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関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevB.93.220401 | |||||
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出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |