Are ferroelectric crystals blaze-gratings for electrons?

被引：0
|
作者：
Lichte, Hannes [1 ,2 ]
机构：
[1] Institute of Applied Physics, Dresden University of Technology, Dresden, Germany
[2] Institute of Applied Physics, Dresden University of Technology, 01062 Dresden, Germany
来源：
Crystal Research and Technology | 2000年 / 35卷 / 06期
关键词：
Diffraction gratings - Electric fields - Electron diffraction - Electrons - Ferroelectric materials - Fourier transforms - Mathematical models - Optics - Phase shift - Polarization - Transmission electron microscopy - X ray diffraction;
D O I：
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中图分类号：
学科分类号：
摘要：
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.
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页码：887 / 898
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