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Updated: Jun 23, 2025

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
Published on: July 24, 2015
Confinement of Dirac fermions in gapped graphene
Fatemeh Pakdel1, Mohammad Ali Maleki2
1Department of Physics, University of Zanjan, University Blvd., Zanjan, 45371-38791, Iran.
Abstract:
We explore the electronic transport characteristics of gapped graphene subjected to a perpendicular magnetic field and scalar potential barriers. Employing the Dirac-Weyl Hamiltonian and the transfer-matrix method, we calculate the transmission and conductance of the system. Our investigation delves into the impact of the energy, the gap energy parameter ( ) and the magnetic flux parameters, including the number of magnetic barriers (N), the magnetic field strength (B) and the width of the magnetic barriers. We demonstrate that manipulating energy and total magnetic flux parameters allow precise control over the range of incident angle variation. Moreover, adjusting the tunable parameter effectively confines quasiparticles within the magnetic system under study. Notably, an increase in N results in a strong wave vector filtering effect. The resonance effects and the peaks in the transmission and conductance versus are observed for . The tunability of the system's transport properties, capable of being toggled on or off, is demonstrated by adjusting and B. As or B increases, we observe suppression of the transmission and conductance beyond critical parameter values.
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