With the increase of the magnetic field, the current amplitude in [110] crystallographic direction increased faster than that in [1 0] crystallographic direction, despite the magnetic field-independent background current in Figure 7b. Figure 7 The magneto-photocurrents J q in (a) [110] and (b) [1 0] crystallographic directions. LY2835219 concentration The red parabolic-shape lines are fitting curves of the

currents. Conclusions In summary, we have researched magneto-photocurrents in the InAs/GaSb superlattice when an in-plane and tilted magnetic field were applied respectively. The magneto-photocurrents in both conditions are insensitive to the polarization state of the incident light. A theoretical model involving anisotropic photo-excited carriers density is utilized to explain the in-plane magnetic field-induced MPE. Compared to the direct electron-photon interaction, the asymmetric electron-phonon interaction which contributes to the magneto-photocurrent may be more sensitive to the radiation polarization state. The quadratic magnetic field dependence of the magneto-photocurrents can be well illustrated by an additional Hall effect model. Acknowledgements The work was supported by the 973 Program (2012CB921304 and 2013CB632805) and the National Natural Science Foundation of China (Nos. 60990313, 61176014, 61307116 and 61290303). References 1. žutić I, Fabian J, Das Sarma S: Spintronics: fundamentals and applications.

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