Superconductivity in heavy fermion compounds

Superconductivity in heavy fermion compounds
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重费米子化合物的超导性

DOI:
10.1007/3-540-27294-1_3
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发表时间:
2004
期刊:
arXiv: Strongly Correlated Electrons
影响因子:
--
通讯作者:
F. Steglich
F. Steglich
中科院分区:
--
文献类型:
--
作者:
P. Thalmeier;G. Zwicknagl;O. Stockert;G. Sparn;F. Steglich

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我们回顾了重费米子超导体的实验和理论研究的现状。我们讨论了大多数 Ce 基化合物,如 Ce122、Ce115、Ce218 和 Ce131 类以及 U 基超导体,如 UBe_13 和 UPd_2Al_3。前者的重点是与量子临界现象和非费米液体行为的联系。其中包括 Ce122 系统中 SDW/SC 竞争的最新中子散射和静水压力结果。对于 U 化合物,我们讨论了具有局域和流动 5f 电子的双模型对于质量增强和超导对形成的重要性。还回顾了非常规超导的巡回自旋涨落理论。
We review the current state of experimental and theoretical investigations of heavy fermion superconductors. We discuss most of the Ce-based compounds like Ce122, Ce115, Ce218 and Ce131 classes and U-based superconductors like UBe_13 and UPd_2Al_3. In the former the emphasis is on the connection to quantum critical phenomena and non-Fermi liquid behaviour. Recent neutron scattering and hydrostatic pressure results on SDW/SC competition in the Ce122 system are included. For the U-compounds we discuss the significance of dual models with both localised and itinerant 5f electrons for mass enhancement and superconducting pair formation. Itinerant spin fluctuation theories for unconventional superconductivity are also reviewed.
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影响因子: --
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