---
OA_type: closed access
_id: '17903'
abstract:
- lang: eng
  text: Light emission from tunnel junctions are a potential photon source for nanophotonic
    applications. Surprisingly, the photons emitted can have energies exceeding the
    energy supplied to the electrons by the bias. Three mechanisms for generating
    these so-called overbias photons have been proposed, but the relationship between
    these mechanisms has not been clarified. In this work, we argue that multielectron
    processes provide the best framework for understanding overbias light emission
    in tunnel junctions. Experimentally, we demonstrate for the first time that the
    superlinear dependence of emission on conductance predicted by this theory is
    robust to the temperature of the tunnel junction, indicating that tunnel junctions
    are a promising candidate for electrically driven broadband photon sources.
article_processing_charge: No
article_type: letter_note
author:
- first_name: E-Dean
  full_name: Fung, E-Dean
  last_name: Fung
- first_name: Latha
  full_name: Venkataraman, Latha
  id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
  last_name: Venkataraman
  orcid: 0000-0002-6957-6089
citation:
  ama: 'Fung E-D, Venkataraman L. Too cool for blackbody radiation: Overbias photon
    emission in ambient STM due to multielectron processes. <i>Nano Letters</i>. 2020;20(12):8912-8918.
    doi:<a href="https://doi.org/10.1021/acs.nanolett.0c03994">10.1021/acs.nanolett.0c03994</a>'
  apa: 'Fung, E.-D., &#38; Venkataraman, L. (2020). Too cool for blackbody radiation:
    Overbias photon emission in ambient STM due to multielectron processes. <i>Nano
    Letters</i>. American Chemical Society. <a href="https://doi.org/10.1021/acs.nanolett.0c03994">https://doi.org/10.1021/acs.nanolett.0c03994</a>'
  chicago: 'Fung, E-Dean, and Latha Venkataraman. “Too Cool for Blackbody Radiation:
    Overbias Photon Emission in Ambient STM Due to Multielectron Processes.” <i>Nano
    Letters</i>. American Chemical Society, 2020. <a href="https://doi.org/10.1021/acs.nanolett.0c03994">https://doi.org/10.1021/acs.nanolett.0c03994</a>.'
  ieee: 'E.-D. Fung and L. Venkataraman, “Too cool for blackbody radiation: Overbias
    photon emission in ambient STM due to multielectron processes,” <i>Nano Letters</i>,
    vol. 20, no. 12. American Chemical Society, pp. 8912–8918, 2020.'
  ista: 'Fung E-D, Venkataraman L. 2020. Too cool for blackbody radiation: Overbias
    photon emission in ambient STM due to multielectron processes. Nano Letters. 20(12),
    8912–8918.'
  mla: 'Fung, E. Dean, and Latha Venkataraman. “Too Cool for Blackbody Radiation:
    Overbias Photon Emission in Ambient STM Due to Multielectron Processes.” <i>Nano
    Letters</i>, vol. 20, no. 12, American Chemical Society, 2020, pp. 8912–18, doi:<a
    href="https://doi.org/10.1021/acs.nanolett.0c03994">10.1021/acs.nanolett.0c03994</a>.'
  short: E.-D. Fung, L. Venkataraman, Nano Letters 20 (2020) 8912–8918.
date_created: 2024-09-09T07:12:19Z
date_published: 2020-11-18T00:00:00Z
date_updated: 2024-12-10T10:28:52Z
day: '18'
doi: 10.1021/acs.nanolett.0c03994
extern: '1'
external_id:
  pmid:
  - '33206534'
intvolume: '        20'
issue: '12'
language:
- iso: eng
month: '11'
oa_version: None
page: 8912-8918
pmid: 1
publication: Nano Letters
publication_identifier:
  eissn:
  - 1530-6992
  issn:
  - 1530-6984
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Too cool for blackbody radiation: Overbias photon emission in ambient STM
  due to multielectron processes'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 20
year: '2020'
...