Resonant magneto–optical Kerr effect induced by hybrid plasma modes in ferromagnetic nanovoids

Zhang Xia^{1, †}, Shi Lei², Li Jing³, Xia Yun-Jie¹, Zhou Shi-Ming⁴

(color online) (a) The sample fabrication course, and (b) polar magneto–optical Kerr effect of Ag film (the left), unpatterned Ag/Co film (the medium), and Co nano-voids on Ag film (the right).