Microscopic derivation of free energy under electric field in ferroelectric and ferroelectric heterostructures containing free carriers

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Abstract

We derive Free energy and the macroscopic charge distribution in ferroelectric and ferroelectric heterostructures from a microscopic quantum mechanical model, and attempt to bridge the macroscopic and the atomic/quantum mechanical pictures. We postulate that ferroelectric should be defined in a heterostructure, especially when it is nanometer-scale. In addition, the separation of the polarization energy into the pure electrostatic and the material reconfiguration energy is proposed.

Original languageEnglish
Pages (from-to)57-67
Number of pages11
JournalFerroelectrics
Volume333
DOIs
Publication statusPublished - May 1 2006

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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