First Order Phase Transition in Quantum Paraelectrics

Details First Order Phase Transition in Quantum Paraelectrics First Order Phase Transition in Quantum Paraelectrics

2008-05-27

arxiv.org/abs/0805.4008v2

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages

Scientific paper

We discuss the nature of pressure induced phase transitions in standard Quantum Paraelectrics near quantum critical point. From a microscopic theory we first show that near the critical point the transition temperature $T_c(p)$ varies as $ (1-p/p_c)^\xi$ with $\xi={1/2}$. Within the Landau scheme, it is shown that for $\xi \leq 1$, a condition satisfied by most quantum paraelectrics the transition is inevitably first order in nature. The present analysis is valid for non-polar impurity induced transitions in these materials and is supported by some recent experiment.

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