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Heffner, R. H.; Bauer, E. D.*; Chung, B.*; Fluss, M. J.*; Higemoto, Wataru; Ito, Takashi; MacLaughlin, D. E.*; Morales, L. A.*; Morris, G. D.*; Oishi, Kazuki; et al.
Journal of the Physical Society of Japan, 75(Suppl.), p.14 - 19, 2006/08
no abstracts in English
Maehira, Takahiro; Hotta, Takashi; Ueda, Kazuo; Hasegawa, Akira*
Physical Review Letters, 90(20), p.207007_1 - 207007_4, 2003/05
Times Cited Count:94 Percentile:92.38(Physics, Multidisciplinary)By using a relativistic linear augmented-plane-wave method, we clarify energy band structures and Fermi surfaces of recently discovered plutonium-based superconductor PuCoGa. We find several cylindrical sheets of Fermi surfaces with large volume, quite similar to CeMIn (M=Ir and Co) isostructural with PuCoGa, in spite of different -electron numbers between Ce and Pu ions. This similarity is simply understood by a concept of electron-hole conversion in a tight binding model constructed based on the - coupling scheme. Due to the present results, we provide a possible scenario to explain why a transition temperature is so high as 18.5K in PuCoGa.