TY - JOUR
T1 - Multiple-Scattering $T$-Matrix Simulations for Nanophotonics: Symmetries and Periodic Lattices
AU - Nečada , Marek
AU - Törmä , Päivi
JO - Communications in Computational Physics
VL - 2
SP - 357
EP - 395
PY - 2021
DA - 2021/05
SN - 30
DO - http://doi.org/10.4208/cicp.OA-2020-0136
UR - https://global-sci.org/intro/article_detail/cicp/19118.html
KW - T-matrix, multiple scattering, lattice modes, symmetry-adapted basis, metamaterials,
Ewald summation.
AB - <p style="text-align: justify;">The multiple scattering method T-matrix (MSTMM) can be used to solve the
electromagnetic response of systems consisting of many compact scatterers, retaining
a good level of accuracy while using relatively few degrees of freedom, largely surpassing other methods in the number of scatterers it can deal with. Here we extend
the method to infinite periodic structures using Ewald-type lattice summation, and
we exploit the possible symmetries of the structure to further improve its efficiency,
so that systems containing tens of thousands of particles can be studied with relative
ease. We release a modern implementation of the method, including the theoretical
improvements presented here, under GNU General Public Licence.</p>