Damping of field-induced chemical potential oscillations in ideal two-band compensated metals

TL;DR

This paper investigates how chemical potential oscillations are damped in ideal two-band compensated metals under magnetic fields, showing suppression when electron and hole effective masses are equal and enhanced damping with magnetic breakdown.

Contribution

It demonstrates the damping of chemical potential oscillations in two-band compensated metals and explains the effects of magnetic breakdown using the Lifshits-Kosevich formalism.

Findings

Chemical potential oscillations are strongly damped or suppressed when electron and hole effective masses are equal.

Magnetic breakdown enhances damping effects on oscillations.

Lifshits-Kosevich formalism effectively describes the observed phenomena.

Abstract

The field and temperature dependence of the de Haas-van Alphen oscillations spectrum is studied for an ideal two-dimensional compensated metal. It is shown that the chemical potential oscillations, involved in the frequency combinations observed in the case of uncompensated orbits, are strongly damped and can even be suppressed when the effective masses of the electron- and hole-type orbits are the same. When magnetic breakdown between bands occurs, this damping is even more pronounced and the Lifshits-Kosevich formalism accounts for the data in a wide field range.