Hisatomo Harima and Katsuhiko Takegahara 2003 J. Phys.: Condens. Matter 15 S2081 doi:10.1088/0953-8984/15/28/328
Hisatomo Harima1 and Katsuhiko Takegahara2
Show affiliationsSome filled skutterudite compounds have recently been found to exhibit very interesting properties: a metal–insulator transition (PrRu4P12), an antiferroquadrupole ordering and heavy-fermion behaviour under magnetic fields (PrFe4P12) and a new class of heavy-fermion superconductivity (PrOs4Sb12). Such varied and interesting physical properties are thought to reflect the Fermi surface properties. Band structure calculations have revealed the characteristics of the conduction bands. The main conduction band consisting of p orbitals of pnictogen surrounding the rare-earth ions has a nesting property, and strongly hybridizes with one of 4f electrons. One of the other conduction bands does not have mixing matrix elements with 4f electrons, resulting in the unique band structure in CeOs4Sb12.
71.20.Eh Rare earth metals and alloys
71.27.+a Strongly correlated electron systems; heavy fermions
73.20.At Surface states, band structure, electron density of states
71.30.+h Metal-insulator transitions and other electronic transitions
71.18.+y Fermi surface: calculations and measurements; effective mass, g factor
Issue 28 (23 July 2003)
Received 12 November 2002
Published 4 July 2003
Hisatomo Harima and Katsuhiko Takegahara 2003 J. Phys.: Condens. Matter 15 S2081
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