Superconductivity and heavy fermion behavior in PrOs4Sb12 -: art. no. 100506
Superconductivity and heavy fermion behavior in PrOs4Sb12 -: art. no. 100506
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DOI：
10.1103/physrevb.65.100506
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发表时间：
2002-03-01
影响因子：
3.7
通讯作者：
Maple, MB
中科院分区：
文献类型：
--
作者：
Bauer, ED;Frederick, NA;Maple, MB
在PrOs_4Sb_（12）中，在T-C =1.85 K时观察到了超导电性，并且从T-C处比热的跃变、T-C附近的上临界场和正常态电子比热中推断出，超导电性似乎涉及有效质量m ~* 近似于50 m（e）的重费米子准粒子。热力学和输运测量表明，重费米子态有一个四极起源，虽然磁起源不能完全排除。
Superconductivity has been observed in PrOs4Sb12 at T-C =1.85 K and appears to involve heavy fermion quasiparticles with an effective mass m*similar to50 m(e) as inferred from the jump in the specific heat at T-C, the upper critical field near T-C, and the normal state electronic specific heat. Thermodynamic and transport measurements suggest that the heavy fermion state has a quadrupolar origin, although a magnetic origin cannot be completely ruled out.