Dense Kondo behavior in the electric resistivity and the specific heat of amorphous CexMn100-x alloy

Binary amorphous alloy system CexMn100-x shows the dense Kondo behavior in the Ce-rich side. This fact is confirmed by the large T2 coefficient A of electrical resistivity at low temperature and also the large linear specific heat coefficient gamma. The result of logA versus loggamma2 plot for Ce-ri...

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Veröffentlicht in:Physica. B, Condensed matter Condensed matter, 2005-04, Vol.359-361, p.299-301
Hauptverfasser: Obi, Y, Murayama, S, Amakai, Y, Asano, K
Format: Artikel
Sprache:eng
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Zusammenfassung:Binary amorphous alloy system CexMn100-x shows the dense Kondo behavior in the Ce-rich side. This fact is confirmed by the large T2 coefficient A of electrical resistivity at low temperature and also the large linear specific heat coefficient gamma. The result of logA versus loggamma2 plot for Ce-rich samples shows the systematic change, but deviates from the Kadowaki-Woods (KW) relation. If we take the orbital degeneracy of Ce 4f-electron into account, according to Kontani's recent analysis, the result satisfies the generalized KW-relation. Therefore, present amorphous Ce-Mn alloy seems to form the dense Kondo state or the heavy-fermion state at low temperature.
ISSN:0921-4526
DOI:10.1016/j.physb.2005.01.113