Anomalous ordered phase in 4f2-based heavy electron PrFe4P12
Anomalous ordered phase in 4f2-based heavy electron PrFe4P12
复制标题
4f2基重电子PrFe4P12中的反常有序相
DOI：
10.1016/s0022-3697(02)00060-4
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发表时间：
2002
影响因子：
4
通讯作者：
H. Sato
中科院分区：
文献类型：
--
作者：
Y. Aoki;T. Namiki;T. Matsuda;H. Sugawara;H. Sato
本文介绍了填充Skutterudite PrFe4P12中反常有序态的最新研究，实验证实了在反常有序态之外存在一种罕见的4f2基重电子(HE)态。从比热测量中发现，在ODS中，HE行为在很大程度上受到了抑制。Pr核的肖特基贡献强烈地表明，ods是非磁性的，很可能是四极起源的。我们认为，Pr-离子上的四极自由度可能在PrFe4P12重准粒子带的形成中起着重要作用。我们还报道了La取代对消耗臭氧层物质的影响。
Recent study on the anomalous ordered state (ODS) in filled-skutterudite PrFe4P12is presented, where the existence of a rare 4f2-based heavy electron (HE) state outside ODS has been experimentally confirmed recently. From specific heat measurements, it is found that the HE behavior is largely suppressed in ODS. The Pr nuclear Schottky contribution strongly indicates that ODS is non-magnetic, most probably of quadrupolar origin. We argue that the quadrupolar degree of freedom on the Pr-ions may play an essential role in the heavy quasiparticle band formation in PrFe4P12. We also report the La-substitution effect on ODS.