论文标题
具有drude-lorentz模型的金属晶体界面处的光学表面等离子体，用于材料介电常数
Optical surface plasmons at a metal-crystal interface with the Drude-Lorentz model for material permittivity
论文作者
论文摘要
在光频率下在光频率下传播的表面电磁波理论沿着各向异性贵金属的界面[例如黄金（au）]和单轴晶体[例如，用drude-lorentz（dl）模型$（dl）模型$（tio $ _2 $）$（tio $ _2 $）$（tio $ _2 $）$（tio $ _2 $）]后者说明了自由电子的\ textIt {intraband}的过渡和金属中绑定电子的多个\ textit {Interband}过渡。波向量的传播特性和SEMW的波频率，杂交因子，即各向同性金属中横向电动（TE）和横向磁（TM）模式之间的幅度比，在单十型基底物中的普通模式和非凡模式之间的横向磁性（TM）模式。发现结果从具有$ε_p$的DRUDE模型的人进行了显着修改，尤其是在短波长度光谱（$λ\ Lessim500 $ nm）中，并且光轴方向的偏差很小。这种SEMW的激发可以在特定方向以光学频率（$ \ sim $ phz）的指定方向传输EM信号的新应用。
The theory of surface electromagnetic waves (SEMWs) propagating at optical frequencies along the interface of an isotropic noble metal [e.g., gold (Au)] and a uniaxial crystal [e.g., Rutile (TiO$_2$)] is revisited with the Drude-Lorentz (DL) model for the complex dielectric material permittivity $(ε_p)$. The latter accounts for the contributions of both the \textit{intraband} transitions of the free electrons and the multiple \textit{interband} transitions of the bound electrons in metals. The propagation characteristics of the wave vectors and wave frequency of SEMWs, the hybridization factors, i.e., the amplitude ratios between the transverse-electric (TE) and transverse-magnetic (TM) modes in the isotropic metal, and between the ordinary and extraordinary modes in the uniaxial substrate are studied numerically. It is found that the results are significantly modified from those with the Drude model for $ε_p$, especially in the short-wavelength spectra ($λ\lesssim500$ nm) and with a small deviation of the orientation of the optical axis. The excitation of such SEMWs can have novel applications in transportation of EM signals in a specified direction at optical frequencies ($\sim $ PHz).
