Fig. 3: Power-dependent and spatial-resolved CPGE in Te. | Nature Communications

Fig. 3: Power-dependent and spatial-resolved CPGE in Te.

From: Unveiling Weyl-related optical responses in semiconducting tellurium by mid-infrared circular photogalvanic effect

Fig. 3

a Power-dependent CPGE under 10.6-μm excitation at positions with the maximal positive (red) and negative (blue) responses on another Te device. c \({\theta }_{\lambda /4}\)-dependent photocurrent under 10.6-μm excitation at positions with the maximal positive (red) and negative (blue) responses on the Te device. e The spatial-resolved CPGE under 10.6-μm excitation on the Te device. The scale bar is 10 μm. b, d, f Experiments carried out under 4.0-μm excitation.

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