Fig. 1
From: Symmetry regimes for circular photocurrents in monolayer MoSe2
Experiment geometry and helicity-dependent response. a Schematic experimental setup. The helicity of the laser excitation is controlled by rotating the quarter-waveplate angle, θ. b Helicity-dependent photovoltage of the contacts [1, 2] (blue) and [A, B] (orange) as a function of the quarter-waveplate angle θ for λ = 785 nm, ϕ = 20°, Vds = 0, Vgate = 0, and α = 45°. The black lines are fits to the phenomenological equation (1). c Power dependence of C, L1, and L2 (extracted from fits to Eq. (1)). The solid lines are linear fits to the experimental data. The vertical dashed line indicates the power used during the experiments, 0.8 mW
