Abstract

We consider some peculiarities of the logarithmic electron-electroninteraction corrections toconductivity, which can arise in magnetic quantum wells due to spin-splitting of energy levels. The matrixelements of Coulomb interaction include different screening contributionsfrom spin-up and spin-down electrons, which can lead to anomalous behavior of the interaction constant when the width of a spin quantum well is changed. Our results explain qualitatively the physical origin of the recently observed anomalous behavior of the logarithmic term in electrical resistivityof Co/Cr/Ag/Co layered structures (Aliev F. G. et al., Phys. Rev. Lett.,78 (1997) 134).

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