By using the magnetic tunnel junction builder, i have made a Ni/Al2O3/Ni tunnel junction. There are two cases. As the two Fe layers can have either parallel spin or anti parallel spin alignment, I have simulated Ni(up spin)/Al2O3/Ni(up spin) and then Ni(up spin)/Al2O3/Ni(down spin) separately. I have obtained two separate band structures for the two sets of simulations. How do I identify in the band structure obtained that which region is for Ni(up spin), which region is for Al2O3 and which region is for Ni(up spin)/Ni(down spin)..??
