Giant ultrafast Kerr effect in superconductors

Charles W. Robson; Kieran A. Fraser; Fabio Biancalana

doi:10.1103/PhysRevB.95.214504

Giant ultrafast Kerr effect in superconductors

Charles W. Robson, Kieran A. Fraser, Fabio Biancalana

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Abstract

We study the ultrafast Kerr effect and high-harmonic generation in superconductors by formulating a model for a time-varying electromagnetic pulse normally incident on a thin-film superconductor. It is found that superconductors exhibit exceptionally large χ(3) due to the progressive destruction of Cooper pairs, and display high-harmonic generation at low incident intensities, and the highest nonlinear susceptibility of all known materials in the THz regime. Our theory opens up avenues for accessible analytical and numerical studies of the ultrafast dynamics of superconductors.

Original language	English
Article number	214504
Journal	Physical Review B
Volume	95
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.95.214504
Publication status	Published - 5 Jun 2017

ASJC Scopus subject areas

Condensed Matter Physics

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Giant ultrafast Kerr effect in superconductors

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