Marco Ornigotti, Luca Ornigotti, Fabio Biancalana
Published 2021-03-09Version 1
We study the generation of harmonics from graphene under the influence of an artificial magnetic field, generated via bending of a graphene flake. We show how the Landau level structure induced by the pseudomagnetic field breaks the centrosymmetry of graphene, thus allowing the generation of even harmonics. We also show, that depending on the impinging pulse duration, the nonlinear signal does not only contain the integer harmonics of the impinging pulse, but also its half-integer ones, due to the peculiar square-root-like nature of Landau levels in graphene.
Laser induced modulation of the Landau level structure in single-layer graphene
Artificial gauge fields in materials and engineered systems
Effect of Berry Phase on Nonlinear Response of Two-dimensional Fermions
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