Photogalvanic current in artificial asymmetric nanostructuresA. D. Chepelianskii, M. V. Entin, L. I. Magarill and D. L. ShepelyanskyEur. Phys. J. B, 56 4 (2007) 323-333DOI: https://doi.org/10.1140/epjb/e2007-00127-2