Open AccessК вопросу о влиянии неоднородного диэлектрического покрытия на характеристики металлической поверхности
Author(s) -
В.В. Погосов
Publication year - 2022
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2022.01.51841.187
Subject(s) - electron , ritz method , coating , work (physics) , dielectric , work function , surface (topology) , kinetic energy , materials science , atomic physics , dielectric function , metal , physics , quantum mechanics , mathematics , nanotechnology , geometry , metallurgy , boundary value problem
Within the framework of the quantum-statistical functional and the Ritz method, thethe problem of finding the surface energy per unit area and work function electrons of ametal flat surface with a inhomogeneous dielectric coating, taken into account in theapproximation of a continuous medium. For a uniform coating, the calculated values areinsensitive to the selection one-parameter functions for an electronic profile, butsensitive to the gradient series of kinetic energy non-interacting electrons. Calculationsare performed for Al, Na and the comparison with the calculations by the Kohn-Shemmethod is made. Analytically the connection between the theory of the Ritz method forinhomogeneous coatings and calculations by the Kohn-Shem method work function ofelectrons for metal-dielectric nanosandwiches. As it turned out, the influenceinhomogeneous coating on the characteristics of the metal surface can be scaled down toa uniform coverage case. The possibility of using the obtained results in variousexperimental situations are discussed.