Fluctuations and Criticality in Quantum Paraelectrics

Details Fluctuations and Criticality in Quantum Paraelectrics Fluctuations and Criticality in Quantum Paraelectrics

2007-07-18

arxiv.org/abs/0707.2634v6

J. Phys.: Condens. Matter 21 (2009) 095901

Physics

Condensed Matter

Materials Science

9 pages, 3 figures, Published version

Scientific paper

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.

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