for this k vectors, aren’t they the other way around, so the maximum of the lower band is at (pi/2a, pi/b) and the minimum of the upper band at (pi/2a, 0). with these answers i get, higher and lowers energies respectively. I assume dat t>0
for this k vectors, aren’t they the other way around, so the maximum of the lower band is at (pi/2a, pi/b) and the minimum of the upper band at (pi/2a, 0). with these answers i get, higher and lowers energies respectively. I assume dat t>0