论文标题
关于表面等离子体及其稳定性的评论
Remarks about surface plasmons and their stability
论文作者
论文摘要
我们对H.-Y.表面等离子体的宏观模型发表评论。邓[新J. Phys。 21（2019）043055; ARXIV：1712.06101]和基于从电荷到电场的能量转换的主张，金属表面上的表面等离子体可能变得不稳定[J.物理：cond。马特。 29（2017）455002; ARXIV：1606.06239，1701.01060]。讨论围绕着散装和金属表面的电荷保护的制定。我们特别详细介绍了有限的电流正常表面的作用。使用Cercignani和Lampis以及Zaremba的方案，我们指出，邓小平选择的电子对于电子的非特定散射进行了修改，以防止表面上的电荷消失。 Different models and approaches in the literature on surface plasmons are reviewed: the interfacial excess field approach of Bedeaux and Vlieger which contains Deng's macroscopic model, the assumption of specular reflection of Ritchie and Marusak, a hydrodynamic model with a composite charge density (partially localized at the surface), the local dielectric model, and a macroscopic method with (anti)symmetric fictitious刺激（例如，由Garc \'ıa-Moliner和Flores使用）。这使邓小平的结果成为了视角，并说明了他的方法问题。
We comment on the macroscopic model for surface plasmons of H.-Y. Deng [New J. Phys. 21 (2019) 043055; arXiv:1712.06101] and a claim, based on energy conversion from charges to the electric field, that surface plasmons on metallic surfaces may become unstable [J. Phys.: Cond. Matt. 29 (2017) 455002; arXiv:1606.06239, 1701.01060]. The discussion revolves around the formulation of charge conservation in the bulk and the surface of a metal. We elaborate in particular on the role of a finite electric current normal to the surface. Using a scheme of Cercignani and Lampis and of Zaremba, we point out that the model chosen by Deng for the non-specular scattering of electrons needs to be amended to prevent the disappearance of charges at the surface. Different models and approaches in the literature on surface plasmons are reviewed: the interfacial excess field approach of Bedeaux and Vlieger which contains Deng's macroscopic model, the assumption of specular reflection of Ritchie and Marusak, a hydrodynamic model with a composite charge density (partially localized at the surface), the local dielectric model, and a macroscopic method with (anti)symmetric fictitious stimuli (used, e.g., by Garc\'ıa-Moliner and Flores). This puts Deng's results into perspective and illustrates problems with his approach.
