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arXiv · 1112.3766

Frequency Dependent Dynamical Electromechanical Response of Mixed Ionic-Electronic Conductors

A. N. Morozovska·E. A. Eliseev·S. L. Bravina·Francesco Ciucci·G. S. Svechnikov·Long-Qing Chen·S. V. Kalinin
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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.

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A. N. Morozovska, E. A. Eliseev, S. L. Bravina, Francesco Ciucci, G. S. Svechnikov, Long-Qing Chen, S. V. Kalinin. 2011-12-16. Frequency Dependent Dynamical Electromechanical Response of Mixed Ionic-Electronic Conductors. https://doi.org/10.1063/1.3673868

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