arXiv:0903.1907v1 [physics.optics] 11 Mar 2009 Ferrimagnetic-like surface resonance from hybrid metamaterial slab Zeyong Wei, Hongqiang Li, ∗ Chao Wu, and Hong Chen Physics Department, Tongji University, Shanghai 200092, China Zhihong Hang and C.T. Chan Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China Daozhong Zhang Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China Abstract We show that a hybrid metamaterial slab comprising of an one-dimensional array of two dif- ferent types of cavities exhibits ferrimagnetic-like surface resonances which can be used to realize interesting phenomena such as directive emission as a consequence of strong angle-dependent re- flection phase and the selective coupling of a Gaussian incident beam into a higher order diffractive channel, giving rise to the phenomenon of negative reflection and retro-directive backtracking. The findings are verified by experiments in the microwave regime. PACS numbers: 41.20. Jb, 42.79.Fm * Electronic address: hqlee@tongji.edu.cn 1