Evidence for an extended critical region near the metamagnetic transition of UCoAl

Electrical resistivity and ac magnetic susceptibility studies of the 5f-metamagnet UCoAl reveal the presence of strong spin fluctuation effects for temperatures below 30 K and magnetic fields below the critical metamagnetic field μ0Hc≈1 T, where a non-Fermi liquid term ∼T3/2 is prominent in the elec...

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Veröffentlicht in:Journal of applied physics 1998-06, Vol.83 (11), p.6435-6437
Hauptverfasser: Kolomiets, A. V., Havela, L., Sechovský, V., DeLong, L. E., Watkins, D. B., Andreev, A. V.
Format: Artikel
Sprache:eng
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Zusammenfassung:Electrical resistivity and ac magnetic susceptibility studies of the 5f-metamagnet UCoAl reveal the presence of strong spin fluctuation effects for temperatures below 30 K and magnetic fields below the critical metamagnetic field μ0Hc≈1 T, where a non-Fermi liquid term ∼T3/2 is prominent in the electrical resistivity. A step-wise increase of the residual resistivity and an increasingly prominent Fermi liquid T2 term of the resistivity is observed as the field is increased though the metamagnetic transition.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.367776