Year: 2006
Type: article
Abstract: We present an effective medium theory that simultaneously determines the effective permittivity and effective permeability of a magnetodielectric composite beyond the long-wavelength limit. In the long-wavelength limit, our theory reproduces previous results obtained in two and three dimensions. To verify our theory, we performed band-structure calculations on a periodic composite in two dimensions for a specific configuration with complicated Mie resonances in the microstructure. Our results show that our theory can be valid even when the wavelength in the background medium, ${\ensuremath{\lambda}}_{0}$, is as small as 1.3 times the lattice constant, $a$, whereas the long-wavelength theory breaks down when ${\ensuremath{\lambda}}_{0}<3.5a$.
Source: Physical Review B
Authors: Ying Wu, Jensen Li, Zhao-Qing Zhang, C. T. Chan
Institution: Hong Kong University of Science and Technology
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W1998772394