Inelastic neutron scattering from PrFe4 P12 at low temperatures and under high magnetic fields

J. G. Park, D. T. Adroja, K. A. McEwen, M. Kohgi, K. Iwasa

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

PrFe4 P12 exhibits a unique transition at 6.5 K with an order parameter whose nature is still controversial. In order to elucidate the origin of the transition, we have carried out inelastic neutron scattering experiments in a range of temperatures and magnetic fields. Our data reveal a different type of low-lying excitations centered at 1.5 and 3.5 meV in the ordered phase with an unusual Q dependence. With increasing field or temperature, the well-defined excitations develop into a quasielastic response, while the ordered phase becomes a paramagnetic state with a very large characteristic energy scale of Γ 0.8 meV, consistent with a large Sommerfeld coefficient γ=1.4 J/mol K2.

Original languageEnglish
Article number085102
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number8
DOIs
Publication statusPublished - 2008 Feb 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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