With the increase of the magnetic field, the current amplitude in

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. IWR-1 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.

Rev Mod Phys 2004, 76:323–410. doi:10.1103/RevModPhys.76.323CrossRef 2. Wolf SA, Awschalom DD, Buhrman

RA, Daughton JM, von Molnár S, Roukes ML, Chtchelkanova AY, Treger DM: Spintronics: a spin-based electronics vision for the future. Science Ivacaftor mw 2001,294(5546):1488–1495. doi:10.1126/science.1065389CrossRef 3. Ganichev SD, Prettl W: Spin photocurrents in quantum wells. J Phys: Condens Matter 2003,15(20):935. 4. Bel’kov VV, Ganichev SD: Magneto-gyrotropic effects in semiconductor quantum wells. Semiconductor Sci Technol 2008,23(11):114003.CrossRef 5. Dai J, Lu H-Z, Yang CL, Shen S-Q, Zhang F-C, Cui X: Magnetoelectric photocurrent generated by direct interband transitions in Meloxicam InGaAs/InAlAs two-dimensional electron gas. Phys Rev Lett 2010, 104:246601. doi:10.1103/PhysRevLett.104.246601CrossRef 6. Lechner V, Golub LE, Lomakina F, Bel’kov VV, Olbrich P, Stachel S, Caspers I, Griesbeck M, Kugler M, Hirmer MJ, Korn T, Schüller C, Schuh D, Wegscheider W, Ganichev SD: Spin and orbital mechanisms of the magnetogyrotropic photogalvanic effects in GaAs/Al x Ga 1− x As quantum well structures. Phys Rev B 2011, 83:155313. doi:10.1103/PhysRevB.83.155313CrossRef 7. Drexler C, Tarasenko SA, Olbrich P, Karch J, Hirmer M, Müller F, Gmitra M, Fabian J, Yakimova R, Lara-Avila S, Kubatkin S, Wang M, Vajtai R, Ajayan M, Kono J, Ganichev SD: Magnetic quantum ratchet effect in graphene. Nat Nano 2013,8(2):104–107.CrossRef 8. Ting DZ-Y, Cartoixà X: Resonant interband tunneling spin filter. Appl Phys Lett 2002,81(22):doi:10.1063/1.1524700.CrossRef 9.

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