2005/04/07 by S. R. Saha, Shanta Saha, H. Sugawara +14
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Iron-based superconductors research #Rare-earth and actinide compounds #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.71.132502
published as Phys. Rev. B 71, 132502 (2005) · Appeared in Physical Review B
openalex publication_date 2005/04/07 · arxiv created 2005/04/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report the de Haas--van Alphen (dHvA) effect and magnetoresistance in the filled-skutterudite superconductor LaRu4P12, which is a reference material of PrRu4P12 that exhibits a metal-insulator (M-I) transition at TMI\ensuremath≃60\phantom\rule0.3em0exK. The observed dHvA branches for the main Fermi surface (FS) are well explained by the band-structure calculation, using the full potential linearized augmented-plane-wave method with the local-density approximation, suggesting a nesting instability with q=(1,0,0) in the main multiply connected FS as expected also in PrRu4P12. Observed cyclotron effective masses of (2.6\ensuremath-11.8)m0, which are roughly twice the calculated masses, indicate the large mass enhancement even in the La-skutterudites. Comparing the FS between LaRu4P12 and PrRu4P12, an essential role of c\text\ensuremath-f hybridization cooperating with the FS nesting in driving the M-I transition in PrRu4P12 is clarified.