Enhanced paramagnetism of the 4d itinerant electrons in the rhodium oxide perovskite SrRhO3

Details Enhanced paramagnetism of the 4d itinerant electrons in the rhodium oxide perovskite SrRhO3 Enhanced paramagnetism of the 4d itinerant electrons in the rhodium oxide perovskite SrRhO3

2001-09-27

arxiv.org/abs/cond-mat/0109522v2

Physics

Condensed Matter

Superconductivity

To be published in PRB

Scientific paper

10.1103/PhysRevB.64.224424

Polycrystalline rhodium(IV) oxide perovskite SrRhO3 was obtained by high-pressure synthesis techniques, followed by measurements of the magnetic susceptibility, electrical resistivity, and specific heat. The title compound has five 4d-electrons per perovskite unit and shows Fermi-liquid behavior in its electrical resistivity. The magnetic susceptibility is large [chi(300K) \~1.1*10^{-3} emu/mol-Rh] and proportional to 1/T^2 (< 380 K), while there is no magnetic long-range order above 1.8 K. The specific heat measurements indicate a probable magnetic contribution below ~ 15 K, which is not predicted by the self-consistent renormalization theory of spin fluctuations for both antiferro- and ferromagnetic 3D nearly-ordered metals.

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