Strongly correlated electron phenomena in Pr-based filled skutterudite compounds

被引：44
作者：
Maple, M. B. [1 ]
Henkie, Z.
Yuhasz, W. M.
Ho, P.-C.
Yanagisawa, T.
Sayles, T. A.
Butch, N. P.
Jeffries, J. R.
Pietraszko, A.
机构：
[1] Univ Calif San Diego, Inst Pure & Appl Phys Sci, Dept Phys, La Jolla, CA 92093 USA
[2] Polish Acad Sci, Inst Low Temp & Struct Res, Wroclaw, Poland
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 310卷 / 02期
基金：
美国国家科学基金会;
关键词：
unconventional superconductivity; heavy fermion behavior; quadrupolar order; crystalline electric field; filled skutterudite;
D O I：
10.1016/j.jmmm.2006.10.508
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Recent experiments on the Pr-based filled skutterudite arsenides and antimonides PrOs4Sb12, PrdOs(1-x)Ru(x))(4)Sb-12, Pr1-xNdxOs4Sb12, PrFe4As12, PrRu4As12, and PrOs4As12 are reviewed. The heavy fermion compound PrOs4Sb12 exhibits unconventional strong-coupling superconductivity below T-c = 1.85K that breaks time reversal symmetry, apparently consists of several distinct superconducting phases, and may involve triplet spin pairing of electrons. Studies of the alloy systems PrdOs(1-x)Ru(x))(4)Sb-12 and Pr1-xNdxOs4Sb12 revealed rich T-x phase diagrams and a strong suppression of the high field ordered phase and the unconventional superconductivity of PrOs4Sb12 with Ru substitution. Among the three Pr-based filled skutterudite arsenides, PrFe4As12 has a ferromagnetic ground state, PrRu4As12 exhibits conventional BCS superconductivity, and PrOs4As12 is an antiferromagnet. (c) 2006 Elsevier B.V. All rights reserved.
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收藏
页码：182 / 187
页数：6
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