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Reduced dielectric response in spatially varying electric fields
2015
Journal of Chemical Physics
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In this paper, the dynamical equation for polarization is derived. From this the dielectric response to a spatially varying electric field is analyzed showing a reduced response due to flux of polarization in the material. This flux is modeled as a diffusive process through linear constitutive relations between the flux and the gradient of the polarization. Comparison between the theory and molecular dynamics simulations confirms this effect. The effect is significant for small length scale
doi:10.1063/1.4935825
pmid:26590542
fatcat:2gl5jwxaqzbipo4a43kz43j7pi