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Proton dynamics in H-bonded ferroelectrics. II. Approximated solutions to the kinetic equations

par Chock, David;Dagonnier, Robert
Référence Physica, 53, 3, page (393-411)
Publication Publié, 1971-06

Article révisé par les pairs

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Résumé :

Approximated solutions at T → ∞ and at Tc are proposed for the set of kinetic equations recently obtained to describe the dynamical behaviour of the pseudo-spin correlation functions of the tunnelling model in KDP ferroelectrics. At high temperatures, we predict a width comparable to the protonic-mode frequency, while at Tc the width is finite but much smaller. The existence of the finite width at vanishing protonic-mode frequency at Tc indicates the absence of dynamic scaling. © 1971.