Transport and Magnetic Properties of YbCu_4Ni

• Authors: I. Čurlik , Š. Mát'ošová , S. Il'kovič , M. Reiffers , M. Giovannini
• Languages of publication: EN

Abstracts

EN

The results on the influence of magnetic field on the electrical resistivity ρ(T) of the heavy fermion YbCu_4Ni in the temperature range 0.4-300 K are presented. We have observed a Kondo-like behaviour below 10 K with a minimum in ρ(T) at about 60 K. An applied magnetic field depresses this behaviour, and a maximum in ρ(T) appears similarly to the maximum observed in heat capacity. The observed electrical magnetoresistance shows negative values in all applied magnetic fields and with increasing temperature its absolute magnitude increases. Moreover, we extended our previous susceptibility measurements up to high temperatures of 1000 K, in order to study possible mixed valence behaviour, which however was not observed.

Keywords

EN

71.27.+a; 75.30.-m; 75.30.Mb

Discipline

• 71.27.+a: Strongly correlated electron systems; heavy fermions
• 75.30.Mb: Valence fluctuation, Kondo lattice, and heavy-fermion phenomena(see also 71.27.+a Strongly correlated electron systems, heavy fermions; for heavy-fermion superconductors, see 74.70.Tx)
• 75.30.-m: Intrinsic properties of magnetically ordered materials(for critical point effects, see 75.40.-s; for magnetotransport phenomena, see 75.47.-m)

• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 1
• Pages: 6-10

Dates

published

2012-07

Contributors

author

I. Čurlik

• Institute of Experimental Physics, Watsonova 47, SK 043 53 Košice, Slovakia

author

Š. Mát'ošová

• Institute of Experimental Physics, Watsonova 47, SK 043 53 Košice, Slovakia

author

S. Il'kovič

• Faculty of Sciences, University of Prešov, 17. novembra 1, SK 080 78 Prešov, Slovakia

author

M. Reiffers

• Institute of Experimental Physics, Watsonova 47, SK 043 53 Košice, Slovakia
• Faculty of Sciences, University of Prešov, 17. novembra 1, SK 080 78 Prešov, Slovakia

author

M. Giovannini

• CNR-SPIN and Department of Chemistry, University of Genova, I-16146 Genova, Italy

References

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Identifiers

DOI

10.12693/APhysPolA.122.6