Raman scattering study of temperature- and field-dependent magnetic polaron formation in (Eu,Gd)O

H. Rho, C. S. Snow, S. L. Cooper, Z. Fisk, A. Comment, J. P.H. Ansermet

Research output: Contribution to journalArticlepeer-review

Abstract

We use Raman scattering to investigate magnetic polarons and spin-career interaction effects in the (Eu, Gd)O system. Raman scattering studies reveal great richness in the phase behavior of this system: a spin-fluctuation-dominated paramagnetic (PM) phase regime for T > T* > Tc, a two-phase regime for T < T* in which magnetic polarons develop below T* and coexist with a remnant of the PM phase, and an inhomogeneous ferromagnetic phase regime for T < Tc. We will discuss how these phase regimes evolve as functions of magnetic field, temperature, and Gd-substitution, and will compare the results with less disordered systems such as EuB6.

Original languageEnglish (US)
Pages (from-to)3364-3367
Number of pages4
JournalInternational Journal of Modern Physics B
Volume16
Issue number20-22
DOIs
StatePublished - Aug 30 2002

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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