Near-field coupling of a point-like dipolar source with a thin metallic film: Implication for STM plasmon excitations

被引：13
|
作者：
Marty, R. [1 ,2 ]
Girard, C. [1 ,2 ]
Arbouet, A. [1 ,2 ]
des Francs, G. Colas [3 ]
机构：
[1] CNRS, CEMES, F-31055 Toulouse, France
[2] Univ Toulouse, UPS, F-31055 Toulouse, France
[3] Univ Bourgogne, CNRS, UMR 6303, ICB, F-21078 Dijon, France
来源：
CHEMICAL PHYSICS LETTERS | 2012年 / 532卷
关键词：
LEAKAGE RADIATION MICROSCOPY; PHOTON-EMISSION; SURFACE; INTERFERENCE;
D O I：
10.1016/j.cplett.2012.02.058
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Recent experiments have shown that it is possible to excite surface plasmons on metallic films by injecting tunnel electrons from a sharp metal tip located in the immediate proximity of the sample. When working close to a bare metal film, the excitation of surface plasmons gives rise to typical circular patterns that can be recorded in both image and Fourier planes. Important physical parameters of surface plasmon propagation such as their propagation length can be extracted from these images. In this Letter, we discuss theoretically the physics of the plasmonic excitations induced by a STM tip. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：100 / 105
页数：6
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