Laser induced suppression of transmission in magnetically strained black phosphorus

TL;DR

This paper theoretically investigates how laser irradiation affects charge transmission in monolayer black phosphorus, revealing laser-induced suppression and anti-resonance effects influenced by magnetic and strain conditions.

Contribution

It introduces a Floquet formalism-based model to analyze laser-modulated charge transport in magnetically strained black phosphorus, highlighting laser-induced suppression of conductance.

Findings

Laser creates sharp anti-resonance in transmission spectrum.

Laser-assisted conductance is suppressed for thin barriers.

Transmission sensitivity depends on laser frequency and intensity.

Abstract

Charge transport through a rectangular vector potential barrier modulated by a continuum laser in monolayer phosphorene is studied theoretically in the ballistic regime along the line of Floquet formalism. Laser free transmission profile displays strong directional behavior exhibiting collimation depending on the incident energy and width of the barrier. However, the application of laser, polarized along the zig-zag direction, creates a sharp anti-resonance in the transmission spectrum and reveals a strong light matter interaction due to broken symmetry in presence of the magnetic vector potential. Transmission properties through a vector barrier are found to be sensitive particularly for lower frequency and higher intensity of the laser. For a thin barrier, the laser assisted conductance is suppressed remarkably in contrast to its oscillatory nature for a thicker one.