[8] Y. A. Bychkov and E. I. Rashba, J. Phys. C 17, 6039 (1984). [9] Y. Kato, R. C. Myers, A. C. Gossard, and D. D. Awschalom, Nature (London) 427, 50 (2003). [10] W. Xu, Appl. Phys. Lett. 82, 724 (2003). [11] X. F. Wang, Phys. Rev. B 72, 085317 (2005). [12] G. Gumbs, Phys. Rev. B 72, 165351 (2005). [13] M. S. Kushwaha, Phys. Rev. B 74, 045304 (2006). [14] D. Weiss, K. V. Klitzing, K. Ploog, and G. Weimann, Europhys. Lett., 8, 179 (1989). [15] R.W. Winkler, J. P. Kotthaus, and K. Ploog, Phys. Rev. Lett. 62, 1177 (1989). [16] R. R. Gerhardts, D. Weiss, and K. v. Klitzing, Phys. Rev. Lett. 62, 1173 (1989).; C. W. J. Beenakker, Phys. Rev. Lett. 62, 2020 (1989).; P. Vasilopoulos, and F. M. Peeters, Phys. Rev. Lett. 63, 2120 (1989). [17] H. L. Cui, V. Fessatidis, and N. J. M. Horing, Phys. Rev. Lett. 63, 2598 (1989); C. Zhang, Phys. Rev. Lett. 65, 2207 (1990);.R. R. Gerhardts and C. Zhang, Phys. Rev. Lett. 64, 1473 (1990); S. M. Stewart and C. Zhang, Phys. Rev. B 52, R17036 (1995). [18] L. W. Shubnikov and W. J. de Hass, Leiden Commun. 207, 210 (1930). [19] X. F. Wang, P. Vasilopoulos, and F. M. Peeters, Phys. Rev. B 71, 125301 (2005).; X. F. Wang, and P. Vasilopoulos, Phys. Rev. B 75, 075331 (2007). [20] A. B. Van’kov, e.t., all, Phys. Rev. Lett. 97, 246801 (2006),; A. S. Zhuravlev, e.t., all, Phys. Rev. B77, 155404 (2008)., and references therein. [21] A. Pinczuk, e.t.all, Phys. Rev. Lett. 68, 3623 (2006). [22] H. Ehrenreich and M. H. Cohen, Phys. Rev. 115, 786 (1959). [23] M. S. Kushwaha, Surf. Sci. Rep. 41, 1 (2001), and references therein. [24] K. Sabeeh and M. Tahir, Phys. Rev. B 71, 035325 (2005), and references therein. [25] R. Krahne, M. Hochgr¨ afe, Ch. Heyn, and D. Heitmann, Phys. Rev. B 61, R16319 (2000)., and references therein. 12