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, SrTiO${}_3$ in the low temperature regime. We identify this system as a {\it gaped quantum paraelectric} and suggest a possible experimental realization of a {\it quantum critical paraelectric} through the application of hydrostatic pressure or doping by impurity.

9 pages, 3 figures, Published version

References in corpus (2)

• The quantum paraelectric behavior of SrTiO_{3} revisited: relevance of the structural phase transition temperature
• Pressure Induced Quantum Phase Transitions

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• Effects of Strain coupling and Marginal dimensionality in the nature of phase transition in Quantum paraelectrics
• Optical phonon contribution to the thermal conductivity of a quantum paraelectric
• On the possibility of mixed phases in disordered quantum paraelectrics
• Quantum transport of topological spin solitonsin a one-dimensional organic ferroelectric