Quantum-Spillover-Enhanced Surface-Plasmonic Absorption at the Interface of Silver and High-Index Dielectrics
Abstract
We demonstrate an unexpectedly strong surface-plasmonic absorption at the interface of silver and high-index dielectrics based on electron and photon spectroscopy. The measured bandwidth and intensity of absorption deviate significantly from the classical theory. Our density-functional calculation well predicts the occurrence of this phenomenon. It reveals that due to the low metal-to-dielectric work function at such interfaces, conduction electrons can display a drastic quantum spillover, causing the interfacial electron-hole pair production to dominate the decay of surface plasmons. This finding can be of fundamental importance in understanding and designing quantum nano-plasmonic devices that utilize noble metals and high-index dielectrics.
Keywords
Cite
@article{arxiv.1504.07867,
title = {Quantum-Spillover-Enhanced Surface-Plasmonic Absorption at the Interface of Silver and High-Index Dielectrics},
author = {Dafei Jin and Qing Hu and Daniel Neuhauser and Felix von Cube and Yingyi Yang and Ritesh Sachan and Ting S. Luk and David C. Bell and Nicholas X. Fang},
journal= {arXiv preprint arXiv:1504.07867},
year = {2015}
}
Comments
5 pages, 5 figures