Revisiting elastic interactions between steps on vicinal surfaces: the buried dipole model.
We expose a new analytical method for computing elastic displacements and interactions due to steps on vicinal surfaces. The model of a "buried dipole" allows us to take into account the specific geometry of the step while performing anisotropic linear elasticity calculations. The displacements found show a remarkable agreement with molecular dynamics simulations for Cu and Pt (001) and (111) vicinals. The interaction energy between steps strongly depends on the dipole direction.
Prévot
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Groupe de Physique des Solides, Universités Paris 6 et 7, UMR-CNRS 75-88, 140 rue de Lourmel, 75015 Paris, France.
Croset
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