Light scattering by a thin wire with a surface-plasmon resonance: Bifurcations of the Poynting vector field

作     者：B. S. Luk’yanchuk V. Ternovsky 

作者机构：Data Storage Institute Agency for Science Technology and Research DSI Building 5 Engineering Drive 1 Singapore 117608 Republic of Singapore M. V. Lomonosov Moscow State University Faculty of Computing Mathematics and Cybernetics MSU Vorobjovy Gory Moscow 119899 Russia 

出 版 物：《Physical Review B》 (Phys. Rev. B Condens. Matter Mater. Phys.)

年 卷 期：2006年第73卷第23期

页      面：235432-235432页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

摘      要：We analyze the energy flow during the scattering of a plane wave by a small homogeneous cylinder in the vicinity of surface-plasmon resonance, where ε′=Reε=−1 (ε stands for permittivity). For the case of small dissipation, ε″=Imε1, this scattering can strongly deviate from the classical dipole approximation (Rayleigh scattering). In certain specified cases, the Rayleigh scattering is replaced with an anomalous light scattering regardless the wire smallness. The phenomenon is based on interplay of the usual dissipative and radiative damping, where the latter is related to inverse transformation of localized resonant plasmons into scattered light. The anomalous light scattering possesses a variety of unusual features, such as an inverse hierarchy of optical resonances and a complicated near-field structure, which may include optical vortexes, optical whirlpools, and other peculiarities in nanoscale area.