Resonant magneto–optical Kerr effect induced by hybrid plasma modes in ferromagnetic nanovoids
Zhang Xia1, †, Shi Lei2, Li Jing3, Xia Yun-Jie1, Zhou Shi-Ming4
       

(color online) θk (black lines) and εk (red lines) (a)–(d), and reflection spectra (e)–(h) as a function of λ of sample S1 with deposition time t = 20, 60, 100, and 150 s from up to down. The blue dashed lines in panels (e) and (h) are the extincition spectrum of Ag and the reflection spectrum of Co film on Ag with deposition time t = 150 s.