2022/12/01 by Rachid El Aitouni, Aitouni, Rachid El, Miloud Mekkaoui +3
Physics and Astronomy · #FOS: Physical sciences #Laser-Matter Interactions and Applications #Mechanical and Optical Resonators #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Quantum optics and atomic interactions
paper · pdf · doi:10.48550/arxiv.2212.00694
openalex publication_date 2022/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the transmission of Dirac fermions in graphene through a tilted barrier potential in the presence of a laser field of frequency ω. By using Floquet theory, we solve the Dirac equation and then obtain the energy spectrum. The boundary conditions together with the transfer matrix method allow us to determine the transmission probabilities corresponding to all energy bands E+lℏω (l=0,±1, ⋯). By limiting to the central band l=0 and the two first side bands l=± 1, we show that the transmissions are strongly affected by the laser field and barrier. Indeed, it is found that the Klein effect is still present, a variety of oscillations are inside the barrier, and there is essentially no transmission across all bands.