title: Propagation of shear elastic and electromagnetic waves in one dimensional piezoelectric and piezomagnetic composites.
abstract: Coupled shear (SH) elastic and electromagnetic (EM) waves propagating oblique to a one dimensional periodic piezoelectric and piezomagnetic composite are investigated using the transfer matrix method. Closed-form expression of the dispersion relations is derived. We find that the band structures of the periodic composite show simultaneously the features of phononic and photonic crystals. Strong interaction between the elastic and EM waves near the center of the Brillouin zone (i.e., phonon-polariton) is revealed. It is shown the elastic branch of the band structures is more sensitive to the piezoelectric effect while the phonon-polariton is more sensitive to the piezomagnetic effect of the composite.
authors.affiliation: Institute for Advanced Study, Institute of Engineering Mechanics, Nanchang University, 330031 Nanchang, China.
authors.forename: P
authors.initials: P
authors.lastname: Shi
authors.affiliation: Department of Engineering Mechanics, CNMM & AML, Tsinghua University, 100084 Beijing, China. Electronic address: chencq@tsinghua.edu.cn.
authors.forename: C Q
authors.initials: CQ
authors.lastname: Chen
authors.affiliation: Institute for Advanced Study, Institute of Engineering Mechanics, Nanchang University, 330031 Nanchang, China.
authors.forename: W N
authors.initials: WN
authors.lastname: Zou
keywords: Periodic piezoelectric and piezomagnetic composite; Phonon-polariton; Phononic and photonic crystal