Magnetotransport effects in the mixed state of heavy fermion superconductors

M. A.López de la Torre, L. E. DeLong, J. L. Vicent

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Magnetotransport effects have been investigated in polycrystalline samples of U6Co and U6Fe. The superconducting state data have been obtained in applied magnetic fields up to 9 T. U6Co has a residual resistance ratio RRR(RT/4.2 K) = 2, Tc = 2.44 K and ΔTc (10%-90%) = 105 mK. The U6Fe sample has RRR = 7, Tc = 3.95 K and ΔTc =40 mK. The magnetic thresholds are roughly the same either with the electrical contacts in the Hall configuration or in the resistivity configuration for the U6Co sample, but they are clearly different for the U6Fe sample, with the Hall thresholds lying below resistivity thresholds, similar to previous results for UBe13obtained using the same technique.

Original languageEnglish
Pages (from-to)2031-2032
Number of pages2
JournalPhysica B: Condensed Matter
Issue numberPART 2
StatePublished - Feb 2 1994

Bibliographical note

Funding Information:
Research at UCM is supported by the Spanish CICYT grant 92-388 and MIDAS program. Research at UK i,,, ,'~upporteId> y the U.S. National Science I~oundation g:rant EHR-9108764.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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