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Abstract
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In the present study Klein tunneling in a single-layer gapped graphene was investigated by transfer matrix
method under normal magnetic field for one and two magnetic barriers. Calculations show that electron transmission
through a magnetic barrier is deflected to positive angles and reduces as the magnitude of magnetic
field and especially the energy gap increases. This reduction is even more significant in larger fields so that after
reaching a specific value of energy gap, an effective confinement for fermions and suppression of Klein tunneling
is reached particularly in normal incidence and the conductance becomes zero. Unlike one barrier, the process of
tunneling through two magnetic barriers induces symmetric transmission probability versus the incident angle;
even, for lower energy gaps, electron transmission probability increases which in turn reduces total conductance
via proper changes in the value of the magnetic field and energy gap. In general, it is concluded that confining
electrons in asymmetric transmission through one barrier is conducted better than two barriers.
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