Phase Transition in Photonic Crystals Doped with Nanoparticles
We have study the phenomenon on of phase transition in photonic band gap (PBG) materials doped with four-level nanoparticles in the presence of the dipole-dipole interaction. Numerical simulations for the real susceptibility have been performed for an isotropic PBG material. It is found that the real susceptibility has a singularity for a certain value of the nanostructure concentration. This is a signature of the phase transition in the system.
S. J. CHUA, J. H. TENG, O. WADA, R. DE LA RUE and X. H. TANG
M. R. Singh "Phase Transition in Photonic Crystals Doped with Nanoparticles", Advanced Materials Research, Vol. 31, pp. 242-245, 2008