Szczegóły publikacji
Opis bibliograficzny
Electronic, transport, and magnetic properties of $Ca_{x}Co_{4}Sb_{12}$ partially filled skutterudites / M. Puyet, B. Lenoir, A. Dauscher, P. Pécheur, C. Bellouard, J. TOBOŁA, J. Hejtmanek // Physical Review. B, Condensed Matter and Materials Physics ; ISSN 1098-0121. — Tytuł poprz.: Physical Review B : Condensed Matter. — 2006 — vol. 73 iss. 3 art. no. 035126, s. 035126-1–035126-12. — Bibliogr. s. 035126-11–035126-12. — Publikacja dostępna online od: 2006-01-27
Autorzy (7)
- Puyet Matthieu
- Lenoir Bertrand
- Dauscher A.
- Pécheur Pierre
- Bellouard C.
- AGHToboła Janusz Stefan
- Hejtmanek J.
Dane bibliometryczne
| ID BaDAP | 32540 |
|---|---|
| Data dodania do BaDAP | 2007-03-30 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.73.035126 |
| Rok publikacji | 2006 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
The physical properties of partially filled CaxCo4Sb12 (x=0.03, 0.05, 0.10, and 0.20) skutterudites have been investigated at low temperature. Electrical, transport, and magnetic data completed by specific heat data are discussed in view of electronic structure Korringa-Kohn-Rostoker method with consistent potential approximation calculations. Unusual electron transport characteristics in CaxCo4Sb12-namely, a complex variation of resistivity curves whereas a rather systematic variation of thermopower with Ca content-seem to be governed by a remarkably large s-like density of states appearing at the conduction band. These features corroborate the large effective masses estimated from Hall and thermopower measurements. The evolution of the density of states near the Fermi level agrees with the sign and variation of the Seebeck coefficient slope alpha/T versus Ca content. The comparison between the values of the electronic specific heat of Ca0.20Co4Sb12 and Co4Sb12 apparently supports the finite density of states at E-F in Ca0.20Co4Sb12. The analyses of the Pauli paramagnetic susceptibility and specific heat behaviors concerning the carrier effective mass are coherent both with the electron transport measurements and the electronic structure features.
