The photogalvanic effects, which require a system lacking inversion symmetry, become possible in SiGe based quantum well (QW) structures due to their built-in asymmetry. We report on observations of the circular and linear photogalvanic effects induced by infrared radiation in (001)-and (113)-orientedp-Si/Si1-xGex QW structures and analyse these observations in view of the possible symmetry of these structures. The circular photogalvanic effect arises due to optical spin orientation of free carriers in QWs with band splitting in k-space which results in a directed motion of free carriers in the plane of the QW. We discuss possible mechanisms that give rise to spin-splitting of the electronic subband states for different symmetries.
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S. Datta and B. Das, Appl. Phys. Lett. 56, 665 (1990).
S.D. Ganichev, H. Ketterl, W. Prettl, E.L. Ivchenko, and L.E. Vorobjev, Appl. Phys. Lett. 77, 3146 (2000).
S.D. Ganichev, E.L. Ivchenko, S.N. Danilov, J. Eroms, W. Wegscheider, D. Weiss, and W. Prettl, Phys. Rev. Lett. 86, 4358 (2001).
E.L. Ivchenko and G.E. Pikus, Superlattices and Other Heterostructures. Symmetry and Optical Phenomena, Springer Series in Solid State Sciences, vol.110, Springer-Verlag, 1995; second edition 1997; Ch. 10.
S.D. Ganichev, Physica B 273-274, 737 (1999).
D.J. Bottomley, H.M. Van Driel, and J.-M. Baribeau, ( Proc. 22nd ICPS,World Scientific, Singapore, 1994) pp. 1572.
M. Seto, M. Helm, Z. Moussa, P. Boucaud, F.H. Julien, J.M. Lourtioz, J.F. Nützel, and G. Abstreiter, Appl. Phys. Lett. 65, 2969 (1994).
D.J. Bottomley, H. Omi, and T. Ogino, J. Crysal Growth 225, 16 (2001).
S.D. Ganichev, E. L. Ivchenko, and W. Prettl, Physica E, in press
Yu.L. Bychkov and E.I. Rashba, J. Phys. C 17, 6039 (1984).
R. Winkler, Phys. Rev. B 62, 4245 (2000).
G.L. Bir and G.E. Pikus, Symmetry and Strain-induced Effects in Semiconductors (Wiley, New York 1974).
E.L. Ivchenko, A.Yu. Kaminski, and U. Rössler, Phys. Rev. B 54, 5852 (1996).
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Ganichev, S.D., Kalz, FP., Rössler, U. et al. Circular Photogalvanic Effect in SiGe Semiconductor Quantum Wells. MRS Online Proceedings Library 690, F3.11 (2001). https://doi.org/10.1557/PROC-690-F3.11