Two-dimensional electron gas in the regime of strong light-matter coupling: Dynamical conductivity and all-optical measurements of Rashba and Dresselhaus coupling

Abstract

A nonperturbative interaction of an electronic system with a laser field can substantially modify its physical properties. In particular, in two-dimensional (2D) materials with a lack of inversion symmetry, the achievement of a regime of strong light-matter coupling allows direct optical tuning of the strength of the Rashba spin-orbit interaction (SOI). Capitalizing on these results, we build a theory of the dynamical conductivity of a 2D electron gas with both Rashba and Dresselhaus SOIs coupled to an off-resonant high-frequency electromagnetic wave. We argue that strong light-matter coupling modifies qualitatively the dispersion of the electrons and can be used as a powerful tool to probe and manipulate the coupling strengths and adjust the frequency range where optical conductivity is essentially nonzero.

5 pages, 5 figures, Supplementary

References in corpus (11)

• Photovoltaic Hall effect in graphene
• Driven quantum transport on the nanoscale
• Irradiated graphene as a tunable Floquet topological insulator
• Measurement of Rashba and Dresselhaus spin-orbit magnetic fields
• Rashba and Dresselhaus Spin-Splittings in Semiconductor Quantum Wells Measured by Spin Photocurrents
• Effect of radiation on transport in graphene
• Transport properties of a two-dimensional electron gas dressed by light
• Spin and charge optical conductivities in spin-orbit coupled systems
• Datta-and-Das spin transistor controlled by a high-frequency electromagnetic field
• Dynamics of quasiparticles in graphene under intense circularly polarized light
• Photo-induced Hall Effect in Graphene -- Effect of Boundary Types

Cited by in corpus (9)

• Floquet engineering of interlayer couplings: Tuning the magic angle of twisted bilayer graphene at the exit of a waveguide
• Quantum ring with the Rashba spin-orbit interaction in the regime of strong light-matter coupling
• Strong anisotropic optical conductivity in two dimensional puckered structures: The role of Rashba effect
• Light-induced anisotropic skyrmion and stripe phases in a Rashba ferromagnet
• Impact of high-frequency pumping on anomalous finite-size effects in three-dimensional topological insulators
• Localized surface electromagnetic waves in CrI${}_3$-based magnetophotonic structures
• Photoinduced electronic and spin properties of two-dimensional electron gases with Rashba spin-orbit coupling under perpendicular magnetic fields
• Andreev tunnelling and Josephson current in light irradiated graphene
• Hybrid surface waves in two-dimensional Rashba-Dresselhaus materials