Quantum kinetic theory of mixed-valence state for metal centers of perovskite ferroelectrics

Abstract

Quantum-statistical description of coherent dipole-active states and quantum kinetic theory of mixed-valence state for metal centers of perovskite ferroelectrics is introduced. For layered perovskites with linear electron spectrum it allowed to establish a quadratic dependence of charge density distribution on momentum. It has been shown that a dipole polarization vector of resonance between d ( f )- and s ( p )-electron states becomes stable due to this found dependence.

Keywords

• квантовые процессы
• перовскитовые сегнетоэлектрики
• когерентное состояние
• поляризация