The unconventional superconductivity of skutterudite PrOs4Sb12: time-reversal symmetry breaking and adjacent field-induced quadrupole ordering
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- Aoki Yuji
- Department of Physics, Tokyo Metropolitan University
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- Tayama Takashi
- Institute for Solid State Physics, University of Tokyo
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- Sakakibara Toshiro
- Institute for Solid State Physics, University of Tokyo
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- Kuwahara Keitaro
- Department of Physics, Tokyo Metropolitan University
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- Iwasa Kazuaki
- Department of Physics, Tohoku University
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- Kohgi Masahumi
- Department of Physics, Tokyo Metropolitan University
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- Higemoto Wataru
- Advanced Science Research Center, Japan Atomic Energy Agency
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- MacLaughlin Douglas E.
- Department of Physics, University of California
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- Sugawara Hitoshi
- Faculty of Integrated Arts and Sciences, The University of Tokushima
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- Sato Hideyuki
- Department of Physics, Tokyo Metropolitan University
書誌事項
- タイトル別名
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- The Unconventional Superconductivity of Skutterudite PrOs<SUB>4</SUB>Sb<SUB>12</SUB>: Time-Reversal Symmetry Breaking and Adjacent Field-Induced Quadrupole Ordering
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説明
This review presents a summary and evaluation of the experimental properties of unconventional superconductivity in PrOs4Sb12. After a brief introduction of filled skutterudites, we argue that the normal-state properties of PrOs4Sb12 are quite different from ordinary heavy-fermion superconductors, in the sense that the 4f-electrons seem to be well localized even at low temperatures where the superconductivity appears. This is reflected in the existence of a field-induced antiferro-quadrupole ordering of Pr 4f-electrons. It is shown that the 4f collective excitations can be described as quadrupolar excitons. Their strong temperature dependence in close correlation with the superconductivity suggests a conjecture that the superconducting mechanism may involve quadrupolar-exciton-mediated pairing of some kind. Although the structure of the superconducting order parameter is far from conclusive, outstanding experimental observations reported to date reveal the uniqueness of the unconventional superconducting state. Special focus is given to time-reversal symmetry breaking in the superconducting state. The article concludes with a discussion of some key issues and desirable future work.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 76 (5), 051006-051006, 2007
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679170519040
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- NII論文ID
- 130005296738
- 110006273162
- 210000106667
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2007JPSJ...76e1006A
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- ISSN
- 13474073
- 00319015
- http://id.crossref.org/issn/00319015
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- NDL書誌ID
- 8728693
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDLサーチ
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- CiNii Articles
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- 抄録ライセンスフラグ
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