Magnetic field dependence of the electrical resistivity in non-Fermi liquid U0.05Y0.95Al2, U0.2Y0.8Pd3 and UCu5-xPdx (x = 1.0, 0.9)

A. M. Strydom, P. De V. Du Plessis

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

We investigate the influence of applied magnetic fields up to B = 8 T on the electrical resistivity attemperatures down to 1.5 K for three established non-Fermi liquid systems U0.05Y0.95Al2, U0.2Y0.8Pd3 and UCu5-xPdx (x = 1.0, 0.9). We follow the approach that an unconventional Kondo mechanism is often seen to be operative at low temperatures in some non-Fermi liquid systems where there are logarithmic or power-law divergences in the temperature dependences of magnetic susceptibility, the specific heat, and the electrical resistivity. In the above systems the incoherent Kondo scattering dominates the electrical resistivity ρ(T) at higher temperatures, while at low temperatures ρ ∼ Tn with n ≈ 1, instead of n = 2 as expected for a Fermi-liquid. We show how the power-law dependence is affected by a magnetic field. The isothermal magnetoresistivity as a function of field is analysed in terms of the Bethe ansatz description in order to extract values of the characteristic Kondo temperature TK.

Original languageEnglish
Pages (from-to)593-597
Number of pages5
JournalActa Physica Polonica A
Volume98
Issue number5
DOIs
Publication statusPublished - Nov 2000
Externally publishedYes
EventInternational Conference -Condensed Matter Physics - Jaszowiec, Poland
Duration: 17 May 200020 May 2000

ASJC Scopus subject areas

  • General Physics and Astronomy

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