Emergence of a quantum coherent state at the border of ferroelectricity

@article{Coak2019EmergenceOA,
  title={Emergence of a quantum coherent state at the border of ferroelectricity},
  author={Matthew John Coak and Charles R. S. Haines and C. Liu and Stephen E. Rowley and Gilbert George Lonzarich and Siddharth S. Saxena},
  journal={arXiv: Materials Science},
  year={2019}
}
Quantum melting of magnetism or ferroelectricity can lead to novel forms of order characterized by exotic excitations and unconventional superconductivity. Here we show by means of high precision measurements of the temperature and pressure dependence of the dielectric susceptibility that quantum melting of a displacive ferroelectric leads to an unconventional quantum paraelectric state exhibiting the phenomenon of 'order by disorder', namely a fluctuation induced enhancement of electric… Expand
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Figures from this paper

Pressure dependence of ferroelectric quantum critical fluctuations
The effect of ferroelectric fluctuations on the temperature dependent dielectric constant of SrTiO$_3$ has been long studied. Those fluctuations have been shown in recent years to be quantum criticalExpand
Dielectric Response of Quantum Critical Ferroelectric as a Function of Pressure
TLDR
Measurements of the dielectric loss of single-crystal SrTiO3 under the application of hydrostatic pressure up to 20 kbar and temperatures down to 200 mK are reported for the first time to comment on the evolution of new fundamental material properties and their relationship with the recently discovered quantum critical phenomena in this material. Expand

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