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Are Ferroelectric Crystals Blaze‐Gratings for Electrons?
Author(s) -
Lichte H.
Publication year - 2000
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/1521-4079(200007)35:6/7<887::aid-crat887>3.0.co;2-o
Subject(s) - ferroelectricity , electron , polarization (electrochemistry) , electron holography , holography , grating , optics , dipole , physics , phase (matter) , condensed matter physics , materials science , optoelectronics , chemistry , quantum mechanics , dielectric
By means of electron holography, phase shifts of electron waves due to domains in ferroelectric crystals can be observed. For interpretation in terms of strength and direction of the ferroelectric polarization, one has to evaluate the specific interactions. However, the mechanism producing this phase shift of electrons is not yet completely understood. We propose and analyze a simple model using only ferroelectric dipole fields, which essentially turns out an analogon of a blaze grating in light optics.