Spin-polarized current and tunneling magnetoresistance (TMR) are studied for
two lengths of phenyl based molecules using Green's function formalism. The Hückel
method is used for describing the Hamiltonian of the molecules. Our results show that an
increase in length of the BPDT molecule leads to an increase in the spin-polarized current
and a decrease in the TMR at higher voltages.
Keywords: Green's function, Huckel method, molecular junction, spin-polarized
current, tunneling magnetoresistance.
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