Anomalous transport properties of RFe4P12 (R = La, Ce, Pr, and Nd)

被引：223

作者：

Sato, H ^{[1
]}

Abe, Y ^{[1
]}

Okada, H ^{[1
]}

Matsuda, TD ^{[1
]}

Abe, K ^{[1
]}

Sugawara, H ^{[1
]}

Aoki, Y ^{[1
]}

机构：

[1] Tokyo Metropolitan Univ, Dept Phys, Tokyo 1920397, Japan

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.62.15125

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the resistivity (rho), thermoelectric power (TEP), and Hall coefficient (RH) on high-quality single crystals of RFe4P12. TEP in CeFe4P12 is extremely large ( similar to 0.5 mV/K at 290 K)with a peak of similar to0.75 mV/K at around 65 K. The Hall mobility also shows a peak at similar to 65 K, suggesting carriers with heavy masses developed at lower temperatures related to the f-hybridized band. Both Pr and Nd systems exhibit an apparent increase of rho with decreasing temperature far above their magnetic transition temperatures. In the same temperature ranges, TEP exhibits unusually large absolute values of -50 muV/K for PrFe4P12 acid -15 muV/K for NdFe4P12, respectively. For PrFe4P12, such anomalous transport properties suggest an un usual ground state, possibly related to the quadrupolar Kondo effect.

引用

页码：15125 / 15130

页数：6

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