| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2010-02-02 |
| タイトル |
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タイトル |
Anomalous elastic softening of SmRu4P12 under high pressure |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Sun, Peijie
Nakanishi, Yoshiki
Nakamura, Mitsuteru
Yoshizawa, Masahito
Ohashi, Masashi
Oomi, Gendo
Sekine, Chihiro
Shirotani, Ichimin
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| 著者(機関) |
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値 |
Graduate School of Engineering, Iwate University |
| 著者(機関) |
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値 |
Graduate School of Engineering, Iwate University |
| 著者(機関) |
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値 |
Graduate School of Engineering, Iwate University |
| 著者(機関) |
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値 |
Graduate School of Engineering, Iwate University |
| 著者(機関) |
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値 |
Department of Physics, Kyushu University |
| 著者(機関) |
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値 |
Department of Physics, Kyushu University |
| 著者(機関) |
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値 |
Faculty of Engineering, Muroran Institute of Technology |
| 著者(機関) |
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値 |
Faculty of Engineering, Muroran Institute of Technology |
| 登録日 |
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日付 |
2010-02-02 |
| 書誌情報 |
Physical Review B
巻 75,
号 5,
p. 054114-1-054114-7,
発行日 2007-01-01
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| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1098-0121 |
| Abstract |
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内容記述タイプ |
Other |
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内容記述 |
The filled skutterudite compound SmRu4P12 undergoes a complex evolution from a paramagnetic metal (phase I) to a probable multipolar ordering insulator (phase II) at TMI∼16.5 K, then to a magnetically ordered phase (phase III) at TN∼14 K. Elastic properties under hydrostatic pressures were investigated to study the nature of the ordering phases. We found that distinct elastic softening above TMI is induced by pressure, giving evidence of quadrupole degeneracy of the ground state in the crystalline electric field. It also suggests that quadrupole moment may be one of the order parameters below TMI. Strangely, the largest degree of softening is found in the transverse elastic constant CT at around 0.5–0.6 GPa, presumably having relevance to the competing and very different Grüneisen parameters Ω of TMI and TN. The interplay between the two phase transitions is also verified by the rapid increase of TMI under pressure with a considerably large Ω of 9. These results can be understood on the basis of the proposed octupole scenario for SmRu4P12. |
| 出版者 |
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出版者 |
American Physical Society |
| 権利 |
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権利情報 |
(c) 2007 The American Physical Society |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.1103/PhysRevB.75.054114 |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 異版である |
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関連タイプ |
isVersionOf |
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識別子タイプ |
URI |
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関連識別子 |
http://www.aps.org/ |
prb-v75i5p054114.pdf (192.2 kB)
