Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-11-27
Europhysics letters Vol 41 (3) pp. 315-320 (1998)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 4 figures
Scientific paper
10.1209/epl/i1998-00149-4
Results on electrical resistivity, magnetoresistance, magnetic Results on electrical resistivity, magnetoresistance, magnetic susceptibility, heat capacity and Gd Mossbauer measurements on a Gd-based intermetallic compound, Gd$_{2}$PdSi$_{3}$ are reported. A finding of interest is that the resistivity unexpectedly shows a well-defined minimum at about 45 K, well above the long range magnetic ordering temperature (21 K), a feature which gets suppressed by the application of a magnetic field. This observation in a Gd alloy presents an interesting scenario. On the basis of our results, we propose electron localization induced by s-f (or d-f) exchange interaction prior to long range magnetic order as a mechanism for the electrical resistance minimum.
Mallik R.
Sampathkumaran E. V.
Strecker M.
Wortmann Gerhard
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