Affiliation: | 1.Institute of Semiconductor Physics, Siberian Branch,Russian Academy of Sciences,Novisibirsk,Russia;2.Novosibirsk State University,Novosibirsk,Russia;3.Laboratoire des Champs Magnétiques Intenses,Max-Planck-Institut für Festk?rperforschung and Centre National de la Recherche Scientique,Grenoble, Cedex 9,France |