Brillouin zone
= Brillouin zone
{c}
{wiki}
The first Brillouin zone is a fundamental cell in reciprocal space. For a one-dimensional lattice of spacing $a$, one conventional choice is
$$
-\frac{\pi}{a}\leq k<\frac{\pi}{a}.
$$
= Brillouin zone
{c}
{wiki}
The first Brillouin zone is a fundamental cell in reciprocal space. For a one-dimensional lattice of spacing $a$, one conventional choice is
$$
-\frac{\pi}{a}\leq k<\frac{\pi}{a}.
$$