Magneto-electro-elastic polariton coupling in a periodic structure

Piliposyan, Gayane, Ghazaryan, KB and Piliposian, GT (2015) Magneto-electro-elastic polariton coupling in a periodic structure. Journal of Physics D: Applied Physics, 48 (17). p. 175501.

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Abstract

Propagation of electro-magneto-acoustic waves in a magneto-electro-elastic (MEE) periodic structure has been investigated with a three phase coupling between mechanical, electric and magnetic fields in each constituent layer. Due to this coupling electromagnetic waves couple with lattice vibrations resulting in both dielectric and magnetic phonon–polaritons which couple via the magneto-electric effect. Propagation properties of acoustic longitudinal and transverse vibrations in this superlattice have been investigated. For longitudinal acoustic vibrations perpendicular to the poling direction, the coupling of piezoelectric and piezomagnetic polaritons results in a propagating mode. For transverse lattice vibrations with the coupled MEE wave propagating parallel to the poling direction, there is a coupled piezoelectric–piezomagnetic phonon polariton gap. The MEE superlattice produces either negative permittivity or negative permeability functions but not double negativity to result in negative refraction crystal.

Item Type:	Article
Uncontrolled Keywords:	Magneto-electro-elastic superlattice, Phononic crystal, Phonon–polariton, Resonance, Band structure
Subjects:	?? QA ??
Depositing User:	Symplectic Admin
Date Deposited:	26 Mar 2015 11:25
Last Modified:	16 Dec 2022 16:06
DOI:	10.1088/0022-3727/48/17/175501
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/2009100