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Electronic-structure theory of crystalline insulators under homogeneous electric field

Zhi-Rong Liu·Jian Wu·Wenhui Duan
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Abstract

Based on the conventional energy band theory, an approach is presented to describe the electronic structure of crystalline insulators in the presence of a finite homogeneous electric field. The expression of polarization is derived which extends the ``Berry-phase'' theory of polarization to nonzero fields. The characteristics of the solutions are studied in details and the associations with the existing perturbation theories and computational schemes are discussed.

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Zhi-Rong Liu, Jian Wu, Wenhui Duan. 2003-06-13. Electronic-structure theory of crystalline insulators under homogeneous electric field. https://doi.org/10.1103/physrevb.69.085117

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