Effect of strong electric fields on ferroelectric and metal-insulator transitions
Abstract
It is shown that a sufficiently strong external electric field causes a decrease in the transition temperature of ferroelectric, antiferroelectric, and metal-insulator transitions. The temperature dependence of the critical electric field suppressing a low-temperature phase is obtained. The relation between the low-temperature charge gap (the band gap) in the insulating phase and the metal-insulator transition temperature is also inferred.
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