Quantum-mechanical cluster-lattice interaction in crystal simulation: Hartree-Fock method

Abstract
The problem of describing quantum mechanically a region of interest in an otherwise extended lattice is discussed for nonmetallic solids. A localizing potential to accomplish this is described, and its implications for the total-energy algorithm are analyzed. A spurious tunneling effect that may arise with a finite embedding lattice is also discussed. DOI: http://dx.doi.org/10.1103/PhysRevB.38.1058 © 1988 The American Physical Society