Spin wave dispersion relation in Sr2Cu3O4Cl2 lattice structure

The aim of this project is to compute the spin wave dispersion of the Sr2Cu3O4Cl2 like lattice. After having introduced the necessary theoretical elements and the crystallographic structure of Sr2Cu3O4Cl2, we will first calculate the couplings between two sites of the lattice. The second main part is to compute the spin wave dispersion relation, in function of the coupling previously calculated.