6533b831fe1ef96bd129994a
RESEARCH PRODUCT
The influence of quantum fluctuations on phase transition temperature in disordered ferroelectrics
Vladimir A. StephanovichE. V. Kirichenkosubject
Quantum phase transitionCondensed Matter::Materials ScienceDipoleMaterials scienceCondensed matter physicsPhononQuantum critical pointGeneral Materials ScienceQuantum phasesInstrumentationQuantumFerroelectricityQuantum fluctuationdescription
We consider the disordered ferroelectric, where the impurity dipoles interact via quantum optical phonons. We show that quantum fluctuations are amplified by the effects of disorder so that they can be important up to the ferroelectric phase transition temperature. In this paper, we calculate the ferroelectric phase transition temperature as a function of impurity dipole concentration. We show that quantum effects change the character of concentrational dependence of . Namely, they cause the discontinuity in so that the critical concentration is reached abruptly. We have shown that quantum effects inhibit the ferroelectricity so that larger (than that in purely classical disordered ferroelectrics) impurity dipole concentrations are necessary to sustain it.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-10-13 | Phase Transitions |