Evolution of the Ground State in the Ternary System CeT2Si2 (T=Cu, Rh and Pd)

P. PEDRAZZINI; M. GÓMEZ BERISSO; O. TROVARELLI; J.G. SERENI; C. GEIBEL

JOURNAL OF LOW TEMPERATURE PHYSICS

Año: 2004 vol. 135 p. 143 - 146

0022-2291

The heavy fermion compounds CeCu2Si2, CeRh2Si2 and CePd2Si2 have been intensively investigated due to the non-conventional relation between superconductivity and magnetism. We have studied these compounds as constituents of a ternary system, where the Ce(RhxCu1–x)2Si2, Ce(PdyRh1–y)2Si2 and Ce(CuzPd1–z)2Si2 alloys span the sides of a triangle with the respective stoichometric compounds at each vertex. In this article we discuss the evolution of the ground state throughout this ternary system, and we analyse (by means of the electrical resistivity) the influence of doping-induced disorder on the Kondo and magnetic ordering temperatures.