Volume effect at the metamagnetic transition in CeRu2Si2 (original) (raw)

Physical review. B, Condensed matter, 1989

Abstract

Thermal-expansion (alpha) measurements performed in magnetic fields down to 1.3 K on the heavy-fermion compound CeRu2Si2 show that the temperature at which the extremum in alpha occurs has a deep minimum at the metamagnetic transition (B*=7.8 T). In agreement with scaling theory, the change of sign in alpha occurs for B~=B*. A Kondo collapse model with ferromagnetic molecular field partially

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