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arXiv · 1905.04098

Effect of quantized conductivity on the anomalous photon emission radiated from atomic-size point contacts

Mickaël Buret·Igor V. Smetanin·Alexander V. Uskov·Gérard Colas des Francs·Alexandre Bouhelier
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Abstract

We observe anomalous visible to near-infrared electromagnetic radiation emitted 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. Counter-intuitively, 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 bremsstrahlung process resulting from hot electrons colliding with the metal boundary and a find qualitative accord with the experimental data.

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Mickaël Buret, Igor V. Smetanin, Alexander V. Uskov, Gérard Colas des Francs, Alexandre Bouhelier. 2019-05-10. Effect of quantized conductivity on the anomalous photon emission radiated from atomic-size point contacts. https://doi.org/10.1515/nanoph-2019-0325

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