Gigantic negative magnetoresistance of nanoheterostructures described by the Fivaz model

Abstract

It is shown that the negative magnetoresistance of nanoheterostructures described by the Fivaz model can become apparent not only under strong, but also under intermediate or weak degeneracy of free carrier gas in them. In so doing, in the Fivaz model it becomes apparent to a larger extent than in the case of a parabolic, though anisotropic, conduction band. The negative magnetoresistance can be both due to spin splitting and the Landau quantization proper.