C x ′ and C y ′ are background photocurrents. To fit the curves by Equations 7 and 10, we obtained the parameters S 1 and S 1 ′. The relations of parameters S 1, S 1 ′ getting from the in-plane and BIBW2992 cost tilted magnetic field experimental configurations are shown in (11) Subscripts in and tilted signify parameters fitted from the in-plane and tilted

magnetic field experiments, respectively. As shown in Equation 11, the parameters of the two configurations are nearly the same. This demonstrates that the theoretical model used in the tilted magnetic field experiments is reasonable. Besides, S 1 and S 1 ′ are much larger than S 3 and S 3 ′. It demonstrates that the magneto-photocurrents are also linear polarization-insensitive for the tilted magnetic field case. Figure 6 shows the magneto-photocurrents excited by circularly polarized

light when the magnetic field is rotated AZD5363 chemical structure in the x-z plane. In this case, a circularly polarized 1,064-nm laser along -z was used. The laser power was about 58 mW. As shown by the coincidence of the data from two different circular polarizations in Figure 6a,b, the experiments show that the currents are unrelated to the circular polarization state of the radiation. Figure 6 The magneto-photocurrents in (a) [110] and (b) [1 0] crystallographic directions. (a) The blue solid line and red inverted triangles denote currents excited by left and right circularly polarized light, respectively. (b) http://www.selleck.co.jp/products/AP24534.html The black solid line and green dots denote currents excited by left and right circularly polarized light, respectively. GSK872 in vitro θ is the angle between the magnetic field direction and the sample

plane. In another hand, we presented the results of the magneto-photocurrents vs. the strength of magnetic field for comparison. A linearly polarized 1,064-nm laser, whose linearly polarized direction was along [110] crystallographic direction, was normally irradiated on the sample plane. The laser power was about 62 mW. The variable magnetic field generated by an electromagnetic device was in the x-z plane. The angle between the magnetic field and the sample plane was 12.5°. At a certain magnetic field, the magneto-photocurrents can be well described by Equations 9 and 10. However, these currents are superpositions of linear magnetic field and quadratic magnetic field-induced currents. To extract the pure quadratic magnetic field-dependent photocurrents, we eliminated the linear magnetic field-dependent currents by (12) The dependences of J q on the strength of magnetic field are shown in Figure 7. We can see that the experimental data points are mainly in accord with the parabolic-shape fitting curves. The currents J q presented clear quadratic magnetic field dependence. When the magnetic field was increased to 0.13 T, the current in [110] crystallographic direction increased by 17.35 pA; however, the current in [1 0] crystallographic direction only increased by 0.