hexagonal
- sisl.geom.hexagonal(bond, atoms=None, orthogonal=False, vacuum=20.0)[source]
A hexagonal unit-cell with 1 or 2 atoms in the basic unit cell
The hexagonal unit-cell is the equivalent of an FCC(111) surface, i.e. a close-packed lattice.
- Parameters:
bond (float) – bond length between atoms (not lattice constant)
atoms (
Atom, optional) – the atom (or atoms) that the hexagonal lattice consists of.orthogonal (bool) – if True returns an orthogonal lattice (2 atoms), otherwise a non-orthogonal lattice (1 atom).
vacuum (float) – length of vacuum region (along 3rd lattice vector)
- Return type: