Fluctuations and Criticality in Quantum Paraelectrics
Abstract
The temperature dependence of static dielectric susceptibility of a system with strongly coupled fluctuating dipoles is calculated within a self consistent mean fluctuation field approximation. Results are qualitatively in good agreement with, a quantum paraelectric, SrTiO3 in the low temperature regime. We identify this system as a gaped quantum paraelectric and suggest a possible experimental realization of a quantum critical paraelectric through the application of hydrostatic pressure or doping by impurity.
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