Kondo insulating behaviour in the filled skutterudite compound CeOs4Sb12

Autor:	E. J. Freeman, Eric D. Bauer, C. Sirvent, A Slebarski, M. B. Maple
Rok vydání:	2001
Předmět:	Condensed matter physics Chemistry Kondo insulator engineering.material Condensed Matter Physics Magnetic susceptibility Magnetization Lattice constant Effective mass (solid-state physics) Electrical resistivity and conductivity engineering General Materials Science Kondo effect Skutterudite
Zdroj:	Journal of Physics: Condensed Matter. 13:4495-4503
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/13/20/310
Popis:	The filled skutterudite CeOs4Sb12 and its nonmagnetic analogue LaOs4Sb12 have been synthesized in single-crystal form using the molten-metal-flux growth technique with Sb flux. Electrical resistivity measurements on CeOs4Sb12 indicate that it is a Kondo insulator with an energy gap of ΔE/kB~10 K. Lattice parameter and magnetic susceptibility measurements suggest that the Ce ions are trivalent in CeOs4Sb12. Specific heat and magnetization measurements reveal an enhanced value of the electronic specific heat coefficient γ~92 mJ mol-1 K-2 and Pauli susceptibility, reminiscent of a moderately heavy-fermion material.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c8d9957a789a02ba8e7cd7c5189c428e https://doi.org/10.1088/0953-8984/13/20/310 Zobrazit plný text záznamu