Frequency Dependent Dynamical Electromechanical Response of Mixed Ionic-Electronic Conductors

Abstract

Frequency dependent dynamic electromechanical response of the mixed ionic-electronic conductor film to a periodic electric bias is analyzed for different electronic and ionic boundary conditions. Dynamic effects of mobile ions concentration (stoichiometry contribution), charge state of acceptors (donors), electron concentration (electron-phonon coupling via the deformation potential) and flexoelectric effect contribution are discussed. A variety of possible nonlinear dynamic electromechanical response of MIEC films including quasi-elliptic curves, asymmetric hysteresis-like loops with pronounced memory window and butterfly-like curves are calculated. The electromechanical response of ionic semiconductor is predicted to be a powerful descriptor of local valence states, band structure and electron-phonon correlations that can be readily measured in the nanoscale volumes and in the presence of strong electronic conductivity.

36 pages, 10 figures, accepted to J. Appl. Phys

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• Frequency Dependent Dynamical Electromechanical Response of Mixed Ionic-Electronic Conductors

Cited by in corpus (5)

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• Nanoscale electrical measurements in liquids using AFM - progress and outlook
• Self-consistent modelling of nonlinear dynamic ESM microscopy in mixed ionic-electronic conductors