Magnetoplasma waves on the semiconductor nanotube surface

TL;DR

This paper investigates plasma and magnetoplasma waves on semiconductor nanotube surfaces, revealing quantum oscillations and Aharonov-Bohm effects in wave spectra influenced by magnetic fields and electron degeneracy.

Contribution

It presents a theoretical analysis of plasma wave spectra on semiconductor nanotubes, incorporating quantum effects and magnetic field oscillations using the effective mass and random phase approximations.

Findings

Spectral windows and wave spectra are derived for degenerate electron gases.

Quantum oscillations of wave frequencies are observed due to Fermi level shifts.

Magnetoplasma wave frequencies exhibit Aharonov-Bohm oscillations with magnetic field changes.

Abstract

The effective mass approximation is used to consider plasma and magnetoplasma waves in an electron system on the surface of the semiconductor cylindrical nanotube. The electron-electron coupling is taken into account in the random phase approach. In the case of a degenerate electron gas the spectral windows on the wavevector-frequency plane and the spectra of the waves are obtained. Their frequencies undergo quantum oscillations of the de Haas-van Alfven type which are attributed to the Fermi level traversing the sub-zone boundaries in the electron energy spectrum. The spectrum and the damping of waves in the non-degenerate electron gas were found. In a magnetic field parallel to the cylinder axis the frequencies of the magnetoplasma waves sustain the Aharonov-Bohm type oscillations that appear with changing magnetic field strength.