Theory of g-Shift and Linewidth in CeP Excited State EPR

  • D. Yang
  • B. R. Cooper
  • C. Y. Huang
  • K. Sugawara


The cerium monopnictides have NaCl structure. In the paramagnetic phase, the Ce3+ (J = 5/2) ion has a Γ7 crystal-field ground state doublet, and an excited Γ8 quartet. In EPR experiments,1 at 9.2 GHz we observed a single resonance peak for polycrystalline CeP (TN ≈ 10 K) from 77 to 300 K. The intensity indicates that the mode originates from within the excited Γ8 quartet. The width is about 300 G, increasing with temperature. Here we apply theory based on the memory function formalism of Mori and Zwanzig2–4 to analyze the behavior of these low lying quasielastic modes and compare the results with the experimental findings.


Time Reversal Symmetry Resonant Field Heisenberg Exchange Excited State Quartet Random Phase Approximation3 
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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • D. Yang
    • 1
  • B. R. Cooper
    • 1
  • C. Y. Huang
    • 2
  • K. Sugawara
    • 3
  1. 1.Dept. of PhysicsWest Virginia UniversityMorgantownUSA
  2. 2.Los Alamos Sci. LabLos AlamosUSA
  3. 3.Dept. of PhysicsCase Western Reserve UniversityClevelandUSA

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