Effect of Fermi-liquid interactions on the low temperature de Haas–van Alphen oscillationsin quasi-two-dimensional conductors

Abstract

In this work we present the results of theoretical analysis of the de Haas–van Alphenoscillations in quasi-two-dimensional conductors. We have been studying the effect of theFermi-liquid correlations of charge carriers on the above oscillations. It was shown that atreasonably low temperatures and weak electron scattering the Fermi-liquid interactionsmay cause noticeable changes in both amplitude and shape of the oscillations even atrealistically small values of the Fermi-liquid parameters. Also, we show that theFermi-liquid interactions in the system of the charge carriers may cause magneticinstability of a quasi-two-dimensional conductor near the peaks of quantum oscillations inthe electron density of states at the Fermi surface, indicating the possibility for thediamagnetic phase transition within the relevant ranges of the applied magnetic fields.