Fig. 3: Temperature-dependent photoresponsivity polarization of the light helicity detector D1 measured at zero magnetic field.
From: Light helicity detector based on 2D magnetic semiconductor CrI3
As temperature decreases from 80 to 2 K, \(\rho\) (black dots) increases from 0% (the dashed line) to a saturated value of 6%, corresponding to the down magnetized state of CrI3. The helicities \(\rho\), together with the error bars, are obtained by fitting the relation between the photocurrent and the angle of the quarter-wave plate. By fitting the data with \(\rho \left(T\right)={\rho }_{0}{(1-\frac{T}{{T}_{{{{{{\rm{c}}}}}}}})}^{\beta }\) (red line), we obtain Tc = 40 K.
