triqs.lattice.tight_binding.TBLattice

class triqs.lattice.tight_binding.TBLattice(units, hoppings={}, orbital_positions=[(0, 0, 0)], orbital_names=None, hopping=None)[source]

Class describing a tight binding hamiltonian on top of a bravais lattice. Has objects of type BravaisLattice, BrillouinZone and TightBinding as attributes, and exposes part of their interfaces.

bl

The associated Bravais Lattice

Type:	BravaisLattice

bz

The associated Brillouin Zone

Type:	BrillouinZone

tb

The tight-binding Hamiltonian

Type:	TightBinding

Methods

__init__(units[, hoppings, ...])

param units:	Basis vectors for the real space lattice.

dispersion(arg) Evaluate the dispersion relation for a momentum vector k in units of the reciprocal lattice vectors

fourier(arg) Evaluate the fourier transform for a momentum vector k in units of the reciprocal lattice vectors

get_kmesh(n_k) Return a mesh on the Brillouin zone with a given discretization

get_rmesh(n_r) Return a mesh on the Bravais lattice with a given periodicity

lattice_to_real_coordinates(x) Signature : (r_t x) -> r_t Transform into real coordinates.

Attributes

`hoppings`
`n_orbitals`	Number of orbitals in the unit cell
`ndim`	Number of dimensions of the lattice
`orbital_names`	The list of orbital names
`orbital_positions`	The list of orbital positions
`units`	Number of dimensions of the lattice