New approach to the analysis of negative magnetostriction in two-dimensional structures

It is shown that the Fourier transform of the negative magnetoresistance as sociated with the interference correction to the conductivity contains info rmation about the distribution function of the closed trajectories with res pect to their areas and about the dependence of the length of the closed tr ajectories on their area (L) over bar(S). On the basis of this result a met hod is proposed for analyzing the negative magnetoresistance. It is used to process experimental results in a two-dimensional structure with a doped b arrier. It is shown that the function (L) over bar(S) in the investigated s tructure is largely determined by the scattering anisotropy. (C) 1999 Ameri can Institute of Physics. [S1063-7826(99)02108-0].