Fano resonances in gapped graphene subject to an oscillating potential barrier and magnetic field

Miloud Mekkaoui; Ahmed Jellal; Hocine Bahlouli

doi:10.1016/j.physe.2020.114502

Fano resonances in gapped graphene subject to an oscillating potential barrier and magnetic field

Miloud Mekkaoui
, Ahmed Jellal^*
, Hocine Bahlouli

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We study Dirac fermions in gapped graphene that are subjected to a magnetic field and a harmonically oscillating in time potential barrier. The tunneling modes inside the gap and the associated Goos-Hänchen (GH) shifts are analytically and numerically investigated. We show that the GH shifts in transmission for the central band and the first two sidebands change sign at the Dirac points ε+lℏω̃(l=0,±1). We also find that the GH shifts can be either negative or positive and becomes zero at transmission resonances.

Original language	English
Article number	114502
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	127
DOIs	https://doi.org/10.1016/j.physe.2020.114502
State	Published - Mar 2021

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Energy gap
Goos-Hänchen shifts
Graphene
Magnetic field
Time-oscillating barrier
Transmission

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/j.physe.2020.114502

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title = "Fano resonances in gapped graphene subject to an oscillating potential barrier and magnetic field",

abstract = "We study Dirac fermions in gapped graphene that are subjected to a magnetic field and a harmonically oscillating in time potential barrier. The tunneling modes inside the gap and the associated Goos-H{\"a}nchen (GH) shifts are analytically and numerically investigated. We show that the GH shifts in transmission for the central band and the first two sidebands change sign at the Dirac points ε+lℏ{\~ω}(l=0,±1). We also find that the GH shifts can be either negative or positive and becomes zero at transmission resonances.",

keywords = "Energy gap, Goos-H{\"a}nchen shifts, Graphene, Magnetic field, Time-oscillating barrier, Transmission",

author = "Miloud Mekkaoui and Ahmed Jellal and Hocine Bahlouli",

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year = "2021",

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doi = "10.1016/j.physe.2020.114502",

language = "English",

volume = "127",

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TY - JOUR

T1 - Fano resonances in gapped graphene subject to an oscillating potential barrier and magnetic field

AU - Mekkaoui, Miloud

AU - Jellal, Ahmed

AU - Bahlouli, Hocine

PY - 2021/3

Y1 - 2021/3

N2 - We study Dirac fermions in gapped graphene that are subjected to a magnetic field and a harmonically oscillating in time potential barrier. The tunneling modes inside the gap and the associated Goos-Hänchen (GH) shifts are analytically and numerically investigated. We show that the GH shifts in transmission for the central band and the first two sidebands change sign at the Dirac points ε+lℏω̃(l=0,±1). We also find that the GH shifts can be either negative or positive and becomes zero at transmission resonances.

AB - We study Dirac fermions in gapped graphene that are subjected to a magnetic field and a harmonically oscillating in time potential barrier. The tunneling modes inside the gap and the associated Goos-Hänchen (GH) shifts are analytically and numerically investigated. We show that the GH shifts in transmission for the central band and the first two sidebands change sign at the Dirac points ε+lℏω̃(l=0,±1). We also find that the GH shifts can be either negative or positive and becomes zero at transmission resonances.

KW - Energy gap

KW - Goos-Hänchen shifts

KW - Graphene

KW - Magnetic field

KW - Time-oscillating barrier

KW - Transmission

UR - https://www.scopus.com/pages/publications/85094627089

U2 - 10.1016/j.physe.2020.114502

DO - 10.1016/j.physe.2020.114502

M3 - Article

AN - SCOPUS:85094627089

SN - 1386-9477

VL - 127

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

M1 - 114502

ER -

Fano resonances in gapped graphene subject to an oscillating potential barrier and magnetic field

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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