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...
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| Published in | Physics letters. A Vol. 447; p. 128288 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
30.09.2022
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| Abstract | •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. |
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| AbstractList | •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. |
| ArticleNumber | 128288 |
| Author | El Aitouni, Rachid Jellal, Ahmed |
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| SubjectTerms | Current density Graphene Magnetic field Periodic potential |
| Title | Fermions in graphene with magnetic field and time-oscillating potential |
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