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Hotta, Takashi
Physica B; Condensed Matter, 378-380, p.51 - 53, 2006/05
Times Cited Count：4 Percentile：22.72(Physics, Condensed Matter)In order to clarify what types of spin and orbital fluctuations dominate over low-temperature electronic properties of Pr-based filled skutterudites, we evaluate multipole susceptibility based on a multiorbital Anderson model constructed from a 
- coupling scheme. It is found that magnetic and quadrupole fluctuations are dominant at low temperatures. When we further include the effect of rattling as dynamical Jahn-Teller phonons, there remain quadrupole and octupole fluctuations, which may induce exotic superconducting pairing.
Hotta, Takashi
Journal of the Physical Society of Japan, 74(9), p.2425 - 2429, 2005/09
Times Cited Count：26 Percentile：73.56(Physics, Multidisciplinary)In order to clarify exotic multipole properties of filled skutterudites, we evaluate multipole susceptibility for 
=1
5, where is the local 
-electron number, on the basis of a multiorbital Anderson model constructed using the - coupling scheme. For =1, magnetic fluctuations dominate over low-temperature electronic properties, while for =2 and 4, electronic states are dominated by both magnetic and quadrupole fluctuations. For =3 and 5, octupole fluctuations are found to be significant, depending on the crystalline electric field potential. We discuss possible relevance of the results to actual materials.
