Oscillations of magnetization in topological line-node semimetals

TL;DR

This paper theoretically studies the phase of de Haas-van Alphen oscillations in topological line-node semimetals, revealing how magnetic field dependence of chemical potential alters oscillation phase and explaining recent experimental Berry phase observations.

Contribution

It provides a theoretical analysis of oscillation phases in topological line-node semimetals, accounting for magnetic field-dependent chemical potential effects.

Findings

Magnetic field dependence of chemical potential affects oscillation phase.

Theoretical results explain experimental Berry phase data in ZrSiS, ZrSiTe, ZrSiSe.

Clarifies the relation between topological features and quantum oscillations.

Abstract

We theoretically investigate the phase of the de Haas - van Alphen oscillations in topological line-node semimetals. In these semimetals the chemical potential of charge carriers can essentially depend on the magnetic field, and this dependence changes the phase of the oscillations as compared to the phase in a three-dimensional metal with a band-contact line. Our results elucidate recent experimental data on the Berry phase for certain electron orbits in ZrSiS, ZrSiTe, and ZrSiSe.