• YAGHOOB MOHAMMADMORADI

      Articles written in Pramana – Journal of Physics

    • Tunnel magnetoresistance in the $B_{n}N_{n}(n = 12, 24)$ cages

      YAGHOOB MOHAMMADMORADI MOJTABA YAGHOBI

      More Details Abstract Fulltext PDF

      In this study, the effects of the type of the cage, the bias and gate voltages on spin transport properties of electrons in magnetic tunnel junction (MTJ) of $B_{n}N_{n}(n = 12, 24)$ cages were investigated by theoretical methods. For a gate voltage $(V_{g})$ more than 0.5V, the device became electrically conductive at $V_{b} = 0.5 V$. The electric current increased linearly for bias voltages more than $|V_{b}|$ = 1 V at $V_{g}$ = 0.0 V. The maximum value of the tunnel magnetic resistance (TMR) ratio was $\sim 75%$ for $\rm{B_{12}N_{12}}$ and 60% for $\rm{B_{24}N_{24}}$ molecules. The maximum values of TMR against the bias voltage $(V_{b})$ were seen at 1.6V (−1.6V) for $\rm{B_{12}N_{12}}$ and 0.0V for $\rm{B_{24}N_{24}}$. At $V_{b}$ = 0.5 V, the TMR ratio was changed by varying the gate voltage. Finally, the spin transport properties of the $\rm{B_{12}N_{12}}$ cage were compared with those of the $\rm{B_{24}N_{24}}$ and $\rm{C_{60}}$ cages.

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