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

TL;DR

This paper presents a theoretical analysis of how Fermi-liquid interactions influence low-temperature de Haas-van Alphen oscillations in quasi-two-dimensional conductors, revealing potential magnetic instabilities and phase transitions.

Contribution

It demonstrates that Fermi-liquid correlations significantly alter oscillation amplitude and shape, and can induce magnetic instability near quantum oscillation peaks.

Findings

Fermi-liquid interactions cause noticeable changes in oscillation amplitude and shape.

Fermi-liquid interactions can lead to magnetic instability near oscillation peaks.

Potential for diamagnetic phase transition in quasi-two-dimensional conductors.

Abstract

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