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RESEARCH PRODUCT

Stochastic Dynamics of Ferroelectric Polarization

E. Klotins

subject

PhysicsThermodynamic equilibriumErgodicityCondensed Matter PhysicsImaginary timeElectronic Optical and Magnetic MaterialsSchrödinger equationsymbols.namesakeLattice (order)symbolsFokker–Planck equationSymplectic integratorStatistical physicsSymmetry breaking

description

This study is addressed to the conceptual and technical problems emerging for ferroelectric systems out of thermodynamic equilibrium. The theoretical setup includes a lattice of interacting cells, each cell obeying regular dynamics determined by Ginzburg-Landau model Hamiltonians whereas relaxation toward minimum energy state is reproduced by thermal environment. Representative examples include polarization response of a single lattice cell, birth of a domain as triggered by the ergodicity breaking, and the effect of nonlocal electroelastic interaction all evidenced combining the Fokker-Planck, imaginary time Schrodinger and symplectic integration techniques.

https://doi.org/10.1080/00150190802381548