Abstract
We investigate the wedge disclination effect on quantum tunneling of a Corbino disk in gapped-graphene of inner R1 and outer R2 radii in the presence of magnetic flux Φi. We solve Dirac equation for different regions and obtain the solutions of energy spectrum in terms of Hankel functions. The asymptotic behaviors for large arguments allow us to determine the transmission, Fano factor and conductance. We establish the case where the crystal symmetry is modified locally by replacing a hexagon by pentagon, square, heptagon or octagon. We show that the wedge disclination n modifies the amplitude of transmission oscillations. We find that the period of Fano factor oscillations is of the Aharonov–Bohm type, which strongly depends on n where intense peaks are observed. As another result, n changes the minimum and period of conductance oscillations of the Aharonov–Bohm type. We show that n minimizes the effect of resonance and decreases the amplitude of conductance magnitude ΔG oscillations.
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