- #1
hhhmortal
- 176
- 0
Hi, I'm having some trouble to fully understand how energy bands are formed in Brillouin zones.
Almongst a few of the questions I have are:
In a 2D plane of atoms, where a is the lattice constant in the x-direction and 1.5a in the y-direction. Would the brillouin zone edge in the k_y direction now simply be -pi/1.5a, pi/1.5a ?
Does the first energy gap occur between reciprocal lattice vector G_1 and G_4? And why does G_4 have a higher energy, I'm trying to visualise this in terms of the propagation of the electron wave in the 2D plane.
Thanks.
Almongst a few of the questions I have are:
In a 2D plane of atoms, where a is the lattice constant in the x-direction and 1.5a in the y-direction. Would the brillouin zone edge in the k_y direction now simply be -pi/1.5a, pi/1.5a ?
Does the first energy gap occur between reciprocal lattice vector G_1 and G_4? And why does G_4 have a higher energy, I'm trying to visualise this in terms of the propagation of the electron wave in the 2D plane.
Thanks.