Magnetic properties of a two-dimensional electron gas strongly coupled to light

TL;DR

This paper explores how intense high-frequency light influences the magnetic properties of a two-dimensional electron gas, revealing that light can modulate electronic states and magnetotransport properties.

Contribution

It introduces a theoretical framework showing that high-frequency electromagnetic waves can control magnetic and electronic properties of 2DEG, reducing Landau level broadening.

Findings

Light decreases scattering-induced Landau level broadening

Magnetoelectronic properties are sensitive to light irradiation

Theory enables optical control of 2DEG magnetic properties

Abstract

Considering the quantum dynamics of 2DEG exposed to both a stationary magnetic field and an intense high-frequency electromagnetic wave, we found that the wave decreases the scattering-induced broadening of Landau levels. Therefore, various magnetoelectronic properties of two-dimensional nanostructures (density of electronic states at Landau levels, magnetotransport, etc) are sensitive to the irradiation by light. Thus, the elaborated theory paves a way to optical controlling magnetic properties of 2DEG.