Study of Length-Dependent Tunneling Magnetoresistance in Two Phenyl Based Molecules

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.