Surface potential at a ferroelectric grain due to asymmetric screening of depolarization fields

  title={Surface potential at a ferroelectric grain due to asymmetric screening of depolarization fields},
  author={Yuri A. Genenko and Ofer Hirsch and Paul Erhart},
  journal={arXiv: Materials Science},
Nonlinear screening of electric depolarization fields, generated by a stripe domain structure in a ferroelectric grain of a polycrystalline material, is studied within a semiconductor model of ferroelectrics. It is shown that the maximum strength of local depolarization fields is rather determined by the electronic band gap than by the spontaneous polarization magnitude. Furthermore, field screening due to electronic band bending and due to presence of intrinsic defects leads to asymmetric… 

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