surface plasmon polaritons

Dispersion of backward-propagating waves in a surface defect on a 3D photonic band gap crystal
T. J. Vreman, M. J. Goodwin, L. J. Corbijn van Willenswaard, W. L. Barnes, A. Lagendijk, and W. L. Vos
Phys. Rev. B 112, 155305: 1-14 (2025)