On the possibility of mixed phases in disordered quantum paraelectrics

Nabyendu Das

doi:10.1142/s021798491450167x

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arXiv · 1104.1692

On the possibility of mixed phases in disordered quantum paraelectrics

Nabyendu Das

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Abstract

We present a theory of phase transition in quantum critical paraelectrics in presence of quenched random-Tc disorder using replica trick. The effects of disorder induced locally ordered regions and their slow dynamics are included by breaking the replica symmetry at vector level. The occurrence of a mixed phase at any finite value of disorder strength is argued. A broad power law distribution of quantum critical points and and its finite temperature consequences are predicted. Results are interesting in the context of a certain class of disordered materials near quantum phase transition.

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Nabyendu Das. 2014-08-29. On the possibility of mixed phases in disordered quantum paraelectrics. https://doi.org/10.1142/s021798491450167x

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