First Order Phase Transition in Quantum Paraelectrics

Nabyendu Das; Suresh G. Mishra

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arXiv · 0805.4008

First Order Phase Transition in Quantum Paraelectrics

Nabyendu Das·Suresh G. Mishra

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Abstract

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)^ξ$ with $ξ={1/2}$. Within the Landau scheme, it is shown that for $ξ\leq 1$, 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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Nabyendu Das, Suresh G. Mishra. 2012-07-27. First Order Phase Transition in Quantum Paraelectrics. https://arxiv.org/abs/0805.4008

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