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Tight binding
The object tight-binding defines the tight-binding structure of a crystal, including the onsite energy of spin-orbitals and the local and non-local hopping among the spin-orbitals. The tight-binding object can be created directly in Lua using the function NewTightBinding() or can be generated from the output of DFT calculation (see, for example, TightBindingDefFromDresdenFPLO()). The tight-binding objects are used to more efficiently generate cluster Hamiltonians (see CreateClusterHamiltonian()).
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