Fermions in graphene with magnetic field and time-oscillating potential

•The magnetic field effect on Dirac fermions in graphene subject to an oscillating potential is studied.•The energy spectrum shows extra subbands resulted from the applied potential and possesses a symmetry.•A current density is generated in both directions x and y and oscillates with different ampl...

Full description

Saved in:
Bibliographic Details
Published inPhysics letters. A Vol. 447; p. 128288
Main Authors El Aitouni, Rachid, Jellal, Ahmed
Format Journal Article
LanguageEnglish
Published Elsevier B.V 30.09.2022
Subjects
Current density
Graphene
Magnetic field
Periodic potential
Graphene
Magnetic field
Current density
Periodic potential
Online AccessGet full text

Cover

More Information
Summary:•The magnetic field effect on Dirac fermions in graphene subject to an oscillating potential is studied.•The energy spectrum shows extra subbands resulted from the applied potential and possesses a symmetry.•A current density is generated in both directions x and y and oscillates with different amplitudes. We study the Dirac fermions in graphene under a magnetic field and a scalar potential oscillating in time. Using the Floquet theory and resonance approximation, we show that the energy spectrum exhibits extra subbands resulting from the oscillating potential in addition to quantized Landau levels. The magnetic field and potential are discovered to greatly influence the generation of current density in the x and y-directions. Our numerical analysis reveals that the energy spectrum is symmetric and that the current density oscillates with varying amplitudes under various conditions.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2022.128288