Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-11-21
J. Phys.: Condens. Matter 23 (2011) 456002
Physics
Condensed Matter
Strongly Correlated Electrons
This is an author-created, un-copyedited version of an article accepted for publication in Journal of Physics: Condensed Matte
Scientific paper
10.1088/0953-8984/23/45/456002
Polycrystalline samples of the solid solution Ce2Cu2-xNixIn were studied by means of x-ray powder diffraction, magnetic susceptibility and electrical resistivity measurements performed in a wide temperature range. Partial substitution of copper atoms by nickel atoms results in quasi-linear decrease of the lattice parameters and the unit cell volume of the system. The lattice compression leads to an increase in the exchange integral and yields a reversal in the order of the magnetic 4f1 and nonmagnetic 4f0 states, being in line with the Doniach phase diagram. In the localized regime, where an interplay of the Kondo scattering and the crystalline electric field effect takes place, the rise in the hybridization strength is accompanied with relative reduction in the scattering conduction electrons on excited crystal field levels. (c) 2011 IOP Publishing Ltd.
Kaczorowski Dariusz
Pikul Adam P.
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