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3d Anderson transition for two electrons in 2d

It is shown that the Coulomb interaction can lead to delocalization of two electron states in two-dimensional disordered potential in a way similar to the Anderson transition in three dimensions [102,105]. At fixed disorder strength the localized phase corresponds to low electron density and large value of parameter $r_s$. The analytical results are supported by numerical study of level spacing statistics.




2000-01-04