Quantum high-frequency conductivity oscillations in graphene multilayers and nodal semimetals in a tilted magnetic field

TL;DR

This paper predicts a new type of angular oscillations in high-frequency conductivity in conductors with band-contact lines, influenced by magnetic field orientation, revealing potential for experimental observation of relativistic effects in materials like graphene multilayers.

Contribution

It introduces a novel prediction of angular oscillations in high-frequency conductivity caused by band-contact lines and Dirac cone anisotropy in tilted magnetic fields.

Findings

Predicted angular oscillations of high-frequency conductivity.

Resonance peak amplitudes follow a simple sum rule.

Oscillations are tunable via magnetic field inclination.

Abstract

A new type of angular oscillations of the high-frequency conductivity for conductors with a band-contact line has been predicted. The effect is caused by groups of charge carriers near the self-intersection points of the Fermi surface, where the electron energy spectrum is near-linear and can be described by anisotropic Dirac cone model. The amplitude of the resonance peaks satisfies the simple sum rule. The ease in changing the degree of anisotropy of the Dirac cone due to the angle of inclination of the magnetic field makes the considered type of oscillations attractive for experimental observation of relativistic effects