Phenomenological Theory of a Scalar Electronic Order : Application to Skutterudite PrFe_4P_<12>(Condensed matter: structure and mechanical and thermal properties)
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概要
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By phenomenological Landau analysis, it is shown that a scalar order parameter with the point-group symmetry Γ_<1g> explains most properties associated with the phase transition in PrFe_4P_<12> at 6.5 K. The scalar-order model reproduces magnetic and elastic properties in PrFe_4P_<12> consistently such as (i) the anomaly of the magnetic susceptibility and elastic constant at the transition temperature, (ii) anisotropy of the magnetic susceptibility in the presence of uniaxial pressure, and (iii) the anomaly in the elastic constant in magnetic field. An Ehrenfest relation is derived which relates the anomaly of the magnetic susceptibility to that of the elastic constant at the transition.
- 2008-03-15
著者
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Kuramoto Yoshio
Department Of Applied Physics Tohoku University
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Kuramoto Yoshio
Department Of Applied Physics Faculty Of Engineering Tohoku University
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