Specific heat in a magnetic field: A probe of the magnetic ground-state properties of heavy-fermion Ce(Ru2−xRhx)Si2−yGey

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1 January 1990

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 41 (1) , 541-546
https://doi.org/10.1103/physrevb.41.541

Abstract

Specific-heat data up to 12.5 T are presented for

{CeRu}_{2}

{Si}_{2}

, Ce(

{Ru}_{0.5}

{Rh}_{0.5}

)_{2}

{Si}_{2}

, and

{CeRu}_{2}

{Si}_{1.8}

{Ge}_{0.2}

. The behaviors with field of the specific heats are compared, also with susceptibility data. The possibility that the maximum in C/T, or γ, at

H_{metamagnetic = 8}

T in

{CeRu}_{2}

{Si}_{2}

corresponds to an increase in

m^{*}

at the metamagnetic transition is discussed. Similar data for

{CeB}_{6}

are compared.

Keywords

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