Pressure-induced superconductivity in a ferromagnet, UGe2: Resistivity measurements in a magnetic field

T. C. Kobayashi, K. Hanazono, N. Tateiwa, K. Amaya, Y. Haga, R. Settai, Y. Onuki

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Abstract

Electrical resistivity measurements in a magnetic are carried out on UGe2 which exhibits pressure-induced superconductivity. The superconductivity is observed from 1.06 to 1.44 GPa. In the temperature and field dependences of the resistivity at P > PC where the ferromagnetic ordering disappears, it is observed that the application of an external field along the a-axis increases the coefficient A of the Fermi-liquid behaviour (∝AT2) abruptly - corresponding to the metamagnetic transition. The characteristic enhancement of HC2 is reconfirmed for H ∥ a-axis. The upper critical field of HC2 is anisotropic: HC2(T) exhibits positive curvature for H ∥ b-axis and H ∥ c-axis.

Original languageEnglish
Pages (from-to)10779-10782
Number of pages4
JournalJournal of Physics Condensed Matter
Volume14
Issue number44 SPEC ISS.
DOIs
Publication statusPublished - Nov 11 2002
Externally publishedYes

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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