文章基本信息

标题：Effect of quantized conductivity on the anomalous photon emission radiated from atomic-size point contacts
本地全文：下载
作者：Mickaël Buret ; Igor V. Smetanin ; Alexander V. Uskov 等
期刊名称：Nanophotonics
印刷版ISSN：2192-8606
电子版ISSN：2192-8614
出版年度：2020
卷号：9
期号：2
页码：413-425
DOI：10.1515/nanoph-2019-0325
出版社：Walter de Gruyter GmbH
摘要：We observe anomalous visible to near-infrared electromagnetic emission from electrically driven atomic-size point contacts. We show that the number of photons released strongly depends on the quantized conductance steps of the contact. Counterintuitively, the light intensity features an exponential decay dependence with the injected electrical power. We propose an analytical model for the light emission considering an out-of-equilibrium electron distribution. We treat photon emission as a Bremsstrahlung process resulting from hot electrons colliding with the metal boundary, and find qualitative accord with the experimental data.
关键词：electromigration ; point contact ; quantized conductivity ; visible light emission ; Bremsstrahlung