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We investigate spin-dependent bandgap structures and spin filtering in graphene with multiple ferromagnetic barriers. Using the transfer matrix method, we have calculated the spin-dependent transmission coefficients, the spin polarization, the conductance, and the electronic energy spectra of the systems. It is shown that the spinup and spindown electrons possess different bandgap structures. As a...
Motivated by the experimental isolation of graphene [1], intense investigations have been paid the physical properties of the two-dimensional (2D) honeycomb lattice. Graphene is regarded as a promising material for spintronic applications due to its weak spin-orbit coupling and long spin lifetimes [2]. Up to now, several groups have studied the spin transport properties in graphene with magnetic and...
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