DEPARTAMENTO MATERIA CONDENSADA

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The magnetic instability of Yb2Pd2(In,Sn) in a non-Fermi liquid environment
(IOP Publishing, 2005-03-04) Bauer, E.; Hilscher, G.; Michor, H.; Paul, Ch.; Aoki, Y.; Sato, H.; Adroja, D.T.; Park, J.-G.; Bonville, P.; Godart, C.; Sereni, J.G.; Giovannini, M.; Saccone, A.; Gerencia Física. Departamento Materia Condensada. División Bajas Temperaturas
Various concentrations of the solid solution Yb2Pd2In1−xSnx ranging from x = 0 to 1 with the tetragonal Mo2FeB2-type structure were prepared and their physical properties were studied by means of bulk and spectroscopic measurements as a function of temperature, pressure and magnetic fields. Results deduced from these studies indicate a slight variation of the valency of the Yb ions, from for both border compounds to ν = 3 at x = 0.6. This variation gives rise to the appearance of long range magnetic order in a narrow concentration region around x = 0.6, while both border compounds remain non-magnetic. The outstanding concentration dependence for the ordered regime may be indicative of two quantum critical points, a novel feature not yet observed in Yb compounds.