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arXiv · 1912.11538

Dimensionality-driven photoproduction of massive Dirac pairs near threshold in gapped graphene monolayers

A. Golub·R. Egger·C. Müller·S. Villalba-Chávez
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Abstract

Generation of quasi-particle--hole pairs in gapped graphene monolayers in the combined field of two counterpropagating light waves is studied. The process represents an analogue of electron-positron pair production from the QED vacuum by the Breit-Wheeler effect. We show, however, that the two-dimensional structure of graphene causes some striking differences between both scenarios. In particular, contrary to the QED case, it allows for non-zero pair production rates at the energy threshold when the Breit-Wheeler reaction proceeds nonlinearly with absorption of three photons.

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A. Golub, R. Egger, C. Müller, S. Villalba-Chávez. 2019-12-21. Dimensionality-driven photoproduction of massive Dirac pairs near threshold in gapped graphene monolayers. https://doi.org/10.1103/physrevlett.124.110403

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