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Charge interaction in layered systems with spatial dispersion
A375 Surface Science 121 (1982) 347-359 North-Holland Publishing Company
347
ARHEEDSTUDYOFOXYGENADSORBEDONCOPPER R.H. MILNE Caoendish L.aboratoq Received
MadingIey Road, Cambridge CB3 OHE, UK
IS December
1981; accepted
for publication
14 July 1982
The effect of oxygen adsorption on various clean, stepped copper surfaces at 300°C was examined by the use of Reflection High Energy Electron Diffraction (RHEED). The stability of a few high index planes is considered and the idea of this enhanced stability being due to a “fit” between the adsorption structure and the terrace width was extended. The interpretation of RHEED patterns from faceted surfaces was discussed so as to account for such features as the curving of the rods and the apparent existence of extra rods.
360
Surface Science 121 (1982) 360-374 North-Holland Publishing Company
ON THE REDUCTION OF NICKEL OXIDE K.M. OSTYN and C.B. CARTER Department of Materials 14853, USA Received
26 March
Science and Engineering, Bard Hall, Cornell University, Ithaca, New York
1982; accepted
for publication
9 July 1982
During the preparation of thin samples of nickel oxide by ion-beam milling, it has been found that preferential removal of oxygen can occur to such an extent that islands of nickel metal form on the surface. The nickel islands are found to be aligned topotacticly with the oxide and the results are compared with other studies of the early stages of the reduction of nickel oxide. The shape of the islands is explained in terms of misfit dislocations which can accommodate the strain; the growth of the islands occurs by generation and climb of the misfit dislocations.
375
Surface Science 121 (1982) 375-395 North-Holland Publishing Company
CHARGE INTERACTION IN LAYERED SYSTEMS WITH SPATIAL DISPERSION L.G. IL’CHENKO, E.A. PASHITSKII and Yu.A. ROMANOV Institute of Physics, Academy of Sciences of the Ukrainian SSR, Prospekt Nauki 144, Kieo-28, USSR Received
11January
1982; accepted
for publication
23 June 1982
The potential electrostatic energy of a charge near the surface of a metal with a metal or a dielectric coating (adsorbate), on the interface between metal (semimetal) and insulator (electrolyte) and in layered thin-film sandwich-type systems (MIS structures) has been calculated. The influence of the metal and the dielectric epitaxial coatings of the metal surface upon the interaction of charges is investigated. Taking into account the spatial dispersion effects, it is shown that in thin films surrounded by a medium with a large dielectric constant, the Coulomb repulsion between electrons decreases.
347
ARHEEDSTUDYOFOXYGENADSORBEDONCOPPER R.H. MILNE Caoendish L.aboratoq Received
MadingIey Road, Cambridge CB3 OHE, UK
IS December
1981; accepted
for publication
14 July 1982
The effect of oxygen adsorption on various clean, stepped copper surfaces at 300°C was examined by the use of Reflection High Energy Electron Diffraction (RHEED). The stability of a few high index planes is considered and the idea of this enhanced stability being due to a “fit” between the adsorption structure and the terrace width was extended. The interpretation of RHEED patterns from faceted surfaces was discussed so as to account for such features as the curving of the rods and the apparent existence of extra rods.
360
Surface Science 121 (1982) 360-374 North-Holland Publishing Company
ON THE REDUCTION OF NICKEL OXIDE K.M. OSTYN and C.B. CARTER Department of Materials 14853, USA Received
26 March
Science and Engineering, Bard Hall, Cornell University, Ithaca, New York
1982; accepted
for publication
9 July 1982
During the preparation of thin samples of nickel oxide by ion-beam milling, it has been found that preferential removal of oxygen can occur to such an extent that islands of nickel metal form on the surface. The nickel islands are found to be aligned topotacticly with the oxide and the results are compared with other studies of the early stages of the reduction of nickel oxide. The shape of the islands is explained in terms of misfit dislocations which can accommodate the strain; the growth of the islands occurs by generation and climb of the misfit dislocations.
375
Surface Science 121 (1982) 375-395 North-Holland Publishing Company
CHARGE INTERACTION IN LAYERED SYSTEMS WITH SPATIAL DISPERSION L.G. IL’CHENKO, E.A. PASHITSKII and Yu.A. ROMANOV Institute of Physics, Academy of Sciences of the Ukrainian SSR, Prospekt Nauki 144, Kieo-28, USSR Received
11January
1982; accepted
for publication
23 June 1982
The potential electrostatic energy of a charge near the surface of a metal with a metal or a dielectric coating (adsorbate), on the interface between metal (semimetal) and insulator (electrolyte) and in layered thin-film sandwich-type systems (MIS structures) has been calculated. The influence of the metal and the dielectric epitaxial coatings of the metal surface upon the interaction of charges is investigated. Taking into account the spatial dispersion effects, it is shown that in thin films surrounded by a medium with a large dielectric constant, the Coulomb repulsion between electrons decreases.