On the possibility of mixed phases in disordered quantum paraelectrics

Details On the possibility of mixed phases in disordered quantum paraelectrics On the possibility of mixed phases in disordered quantum paraelectrics

2011-04-09

arxiv.org/abs/1104.1692v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, 1 figure

Scientific paper

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

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