A Simple Model for the Surface Phenomena |
| L. Wojtczak Ecole Nationale d'Ingénieurs de St. Etienne, Saint Etienne, France |
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| The simplicity of the present model consists in the construction of the Hamiltonian based on the models of quasi-harmonic oscillators coupled to quasi-free electrons with the effective parameters which are estimated by means of the pseudoharmonic approach and coherent potential approximation, respectively. The geometry of a sample is determined by the topological disorder at the surface reflecting the surface roughness. The model is discussed in connection with the friction related to the melting and pre-melting phenomena. The backscattering of electrons seems to be a testing tool useful not only for decorated surfaces but also for quasi-liquid layers. |
| DOI: 10.12693/APhysPolA.83.685 PACS numbers: 68.15.+t, 68.45.-v |