☆ 4.8 Article

Theory of Light Emission from Quantum Noise in Plasmonic Contacts: Above-Threshold Emission from Higher-Order Electron-Plasmon Scattering

PHYSICAL REVIEW LETTERS (2015)

期刊

PHYSICAL REVIEW LETTERS

卷 114, 期 12, 页码 -

出版社

AMER PHYSICAL SOC

DOI: 10.1103/PhysRevLett.114.126803

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-

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Physics, Multidisciplinary

资金

Israel Science Foundation
Israel-U.S. Binational Science Foundation [2011509]
European Science Council (FP7/ERC) [226628]
Villum foundation
Carlsberg foundation

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摘要

We develop a theoretical framework for the description of light emission from plasmonic contacts based on the nonequilibrium Green function formalism. Our theory establishes a fundamental link between the finite-frequency quantum noise and ac conductance of the contact and the light emission. Calculating the quantum noise to higher orders in the electron-plasmon interaction, we identify a plasmon-induced electron-electron interaction as the source of experimentally observed above-threshold light emission from biased STM contacts. Our findings provide important insight into the effect of interactions on the light emission from atomic-scale contacts.

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