Beating oscillations of magneto-optical spectra in simple hexagonal graphite

TL;DR

This paper investigates the complex magneto-optical spectra of simple hexagonal graphite, revealing rich beating oscillations influenced by magnetic field and photon energy, with implications for material identification.

Contribution

It provides a detailed analysis of the magneto-optical beating patterns and distinguishes single-particle from collective excitations in simple hexagonal graphite.

Findings

Beating oscillations are dominated by magnetic field strength and photon energy.

The first group of oscillations shows stronger intensity and broader energy range.

Magneto-optical features can help identify simple hexagonal graphite among other bulk graphites.

Abstract

The magneto-optical properties of simple hexagonal graphite exhibit rich beating oscillations, which are dominated by the field strength and photon energy. The former has a strong effect on the intensity, the energy range of the beating and the number of groups, and the latter modulates the total group numbers of the oscillation structures. The single-particle and collective excitations are simultaneously presented in the magnetoreflectance spectra and can be precisely distinguished. For the loss function and reflectance, the beating pattern of the first group displays stronger intensities and broader energy range than other groups. Simple hexagonal graphite possesses unique magneto-optical characteristics that can serve to identify other bulk graphites.