Coupling of electromagnetic waves and superlattice vibrations in a piezomagnetic superlattice: Creation of a polariton through the piezomagnetic effect

被引：18

作者：

Liu, H ^{[1
]}

Zhu, SN

Dong, ZG

Zhu, YY

Chen, YF

Ming, NB

Zhang, X

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Dept Phys, Nanjing 210093, Peoples R China

[2] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.71.125106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We studied the propagation of an electromagnetic (EM) wave in a piezomagnetic superlattice with piezomagnetic coefficient being modulated. Because of the piezomagnetic effect, the coupling between the EM wave and vibration of superlattice can be established, resulting in the creation of a type of magnetic polariton that does not exist in ordinary magnetic material. At some resonance frequencies, the abnormality of dispersion of permeability introduces negative value and piezomagnetic superlattice can make a kind of negative permeability material.

引用

页数：5

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