[16] T. Cao, C. Wei, R. E. Simpson, L. Zhang, M. J. Cryan. Broadband polarization-independent perfect absorber using a phase-change metamaterial at visible frequencies. Sci. Rep., 4, 3955(2014).
[18] N. Yamada, S. Raoux, M. Wuttig. Development of materials for third generation optical storage media. Phase Change Materials: Science and Applications, 199-226(2009).
[21] E. D. Palik. Handbook of Optical Constants of Solids, 1(1985).