Volume 133, Number 1, January 2021
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||04 March 2021|
Homogenization of layered media: Intrinsic and extrinsic symmetry breaking
1 Department of Electrical and Computer Engineering, The University of Akron - Akron, OH 44325-3904, USA
2 Department of Electrical, Computer, and Systems Engineering, Case Western Reserve University Cleveland, OH, 44106, USA
3 School of Physical and Mathematical Sciences, Nanyang Technological University 21 Nanyang Link, 637371, Singapore
Received: 26 August 2020
Accepted: 22 November 2020
A general homogenization procedure for periodic electromagnetic structures, when applied to layered media with asymmetric lattice cells, yields an effective tensor with magnetoelectric coupling. Accurate results for transmission and reflection are obtained even in cases where classical effective medium theory breaks down. Magnetoelectric coupling accounts for symmetry breaking in reflection and transmission when a non-symmetric structure is illuminated from two opposite sides.
PACS: 78.66.-w – Optical properties of specific thin films / 42.50.Dv – Quantum state engineering and measurements / 81.05.Xj – Metamaterials for chiral, bianisotropic and other complex media
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