arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1012.0714cond-mat.mes-hallphysics.optics
收藏

量子限制引起的金属界面场增强

Field enhancement at metallic interfaces due to quantum confinement

Z. Fatih Öztürk, Sanshui Xiao, Min Yan, Martijn Wubs, Antti-Pekka Jauho, Niels Asger Mortensen

摘要:

我们指出了一个明显被忽视的后果,空气-金属界面处的电位移矢量所服从的边界条件:正常分量的连续性与电子气在空气中的量子力学渗透相结合,意味着存在一个表面上的介电函数为零。这又导致总电场的法向分量的增强。我们研究了平面金属表面的这种效果,与不均匀的电子密度占一个Jeldinger模型。我们还说明了等边三角形纳米岛通过适当的麦克斯韦方程组的数值解的效果,并表明,场增强是几个数量级大于传统的理论预测。

英文摘要:

We point out an apparently overlooked consequence of the boundary conditions obeyed by the electric displacement vector at air-metal interfaces: the continuity of the normal component combined with the quantum mechanical penetration of the electron gas in the air implies the existence of a surface on which the dielectric function vanishes. This, in turn, leads to an enhancement of the normal component of the total electric field. We study this effect for a planar metal surface, with the inhomogenous electron density accounted for by a Jellium model. We also illustrate the effect for equilateral triangular nanoislands via numerical solutions of the appropriate Maxwell equations, and show that the field enhancement is several orders of magnitude larger than what the conventional theory predicts.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑