The normal states of magnetic d and f transition metals
Abstract
The normal states of magnetic metals with vanishing Curie 0953-8984/8/48/002/img1 or Néel 0953-8984/8/48/002/img2 temperatures are investigated by means of measurements of the temperature and pressure dependence of the resistivity in the stoichiometric d and f compounds 0953-8984/8/48/002/img3 and 0953-8984/8/48/002/img4. The results for the nearly ferromagnetic d metals may be described over a wide range in temperature and pressure in terms of a quantitative model of a marginal Fermi liquid based on dispersive spin-fluctuation spectra inferred from inelastic neutron scattering data. The behaviour of the antiferromagnetic f metals is also unconventional, but in a way which cannot yet be readily categorized. Near the critical pressure where 0953-8984/8/48/002/img5, 0953-8984/8/48/002/img6 displays a resistivity of the form 0953-8984/8/48/002/img7 over nearly two decades in temperature before condensing into a short-coherence-length superconducting state below 0.4 K. The isoelectronic and isostructural compound 0953-8984/8/48/002/img4, with a lattice cell volume slightly smaller than that of 0953-8984/8/48/002/img6, remains normal down to 20 mK and shows a resistivity of the form 0953-8984/8/48/002/img10 over a decade below several kelvin at ambient pressure. These findings for the Ce systems have not yet been described consistently in terms of an extension of the model developed for the ferromagnetic d metals.
- Publication:
-
Journal of Physics Condensed Matter
- Pub Date:
- November 1996
- DOI:
- 10.1088/0953-8984/8/48/002
- Bibcode:
- 1996JPCM....8.9675J