Answers are grounded in this paper and cite their sources.
An ionic-type phononic crystal composed of two ferroelectric media with opposite spontaneous polarization aligned periodically in a superlattice structure was studied theoretically and experimentally. The coupling between vibrations of the superlattice and the electromagnetic waves results in various long-wavelength optical properties, such as microwave absorption, dielectric abnormality, and polariton excitation, that exist originally in ionic crystals. The results show that this artificial crystal structure can be used to simulate the microscopic physical processes in real crystals.
No takes yet. Share an insight, caveat, or question.
Lu et al. (1999) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: