Effect of interface magnetic moments and quantum-well states on magnetization-induced second-harmonic generation

Article

关键词: OPTICAL 2ND-HARMONIC GENERATION;    SURFACE;    FILMS;    SUPERLATTICES;    MULTILAYERS;    NICKEL;    LAYER;   

DOI  :  10.1103/PhysRevB.54.R2343

来源: SCIE

【 摘 要 】

We develop a model for magnetization-induced second-harmonic-generation (MSHG) experiments on Co/Cu(001) and Cu/Co(001) overlayers by expanding the nonlinear optical susceptibility to lowest order in the magnetization, and taking the latter to be given by the interfacial moments from ab initio electronic-structure calculations. The model accounts well for the relative MSHG signal from Co/Cu(001), but contrary to experiment predicts a nearly constant signal for Cu/Co(001). We discuss the possibility of quantum-well states accounting for the failure in the latter case.

【 授权许可】

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