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Phonon spectrum of the ferromagnetic superconductor UGe$_2$ : Consequences for the specific heat

S. Raymond·A. Huxley
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Abstract

We report inelastic neutron scattering measurements of the phonon spectrum of the pressure-induced ferromagnetic superconductor UGe$_{2}$. No changes of the spectrum were found on cooling down to low temperature. The phonon contribution to the specific heat was estimated from a fit to our data. The excess specific heat previously noted at around $T_{x} \approx$ 30 K is not due to phonons but is well described by the temperature dependence of the magnetic order parameter at the molecular field level.

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S. Raymond, A. Huxley. 2006-01-04. Phonon spectrum of the ferromagnetic superconductor UGe$_2$ : Consequences for the specific heat. https://doi.org/10.1103/physrevb.73.094420

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