Surface conductivity changes during the electrochemical adsorption of UPD layers on silver and gold

The surface conductivity changes for UPD and UPS of Cu, Ag, Tl, Cd, Pb and Bi on gold and of Tl, Cd, Pb and Bi on silver were measured. At low coverages the relative resistance change, ΔR R depends linearly upon the adatom coverage, θ, obeying Linde's rule for the surface. At intermediate cover...

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Autores principales: Romeo, F.M., Tucceri, R.I., Posadas, D.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00396028_v203_n1-2_p186_Romeo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00396028_v203_n1-2_p186_Romeo2023-10-03T14:49:50Z Surface conductivity changes during the electrochemical adsorption of UPD layers on silver and gold Romeo, F.M. Tucceri, R.I. Posadas, D. The surface conductivity changes for UPD and UPS of Cu, Ag, Tl, Cd, Pb and Bi on gold and of Tl, Cd, Pb and Bi on silver were measured. At low coverages the relative resistance change, ΔR R depends linearly upon the adatom coverage, θ, obeying Linde's rule for the surface. At intermediate coverages ΔR R goes through a maximum and then decreases. The values of ΔR R at the maximum and at θ≅1 follows the sequence of the atomic radius of the adsorbate. The change of the specularity parameter, Δp, at θ≅1 indicates that the more dense the surface adlayer is, the more specularly the electrons are reflected. The shape of the ΔR R versus θ curve is explained qualitatively in terms of the structure of the adlayer and the distance between the adatoms. © 1988. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00396028_v203_n1-2_p186_Romeo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The surface conductivity changes for UPD and UPS of Cu, Ag, Tl, Cd, Pb and Bi on gold and of Tl, Cd, Pb and Bi on silver were measured. At low coverages the relative resistance change, ΔR R depends linearly upon the adatom coverage, θ, obeying Linde's rule for the surface. At intermediate coverages ΔR R goes through a maximum and then decreases. The values of ΔR R at the maximum and at θ≅1 follows the sequence of the atomic radius of the adsorbate. The change of the specularity parameter, Δp, at θ≅1 indicates that the more dense the surface adlayer is, the more specularly the electrons are reflected. The shape of the ΔR R versus θ curve is explained qualitatively in terms of the structure of the adlayer and the distance between the adatoms. © 1988.
format JOUR
author Romeo, F.M.
Tucceri, R.I.
Posadas, D.
spellingShingle Romeo, F.M.
Tucceri, R.I.
Posadas, D.
Surface conductivity changes during the electrochemical adsorption of UPD layers on silver and gold
author_facet Romeo, F.M.
Tucceri, R.I.
Posadas, D.
author_sort Romeo, F.M.
title Surface conductivity changes during the electrochemical adsorption of UPD layers on silver and gold
title_short Surface conductivity changes during the electrochemical adsorption of UPD layers on silver and gold
title_full Surface conductivity changes during the electrochemical adsorption of UPD layers on silver and gold
title_fullStr Surface conductivity changes during the electrochemical adsorption of UPD layers on silver and gold
title_full_unstemmed Surface conductivity changes during the electrochemical adsorption of UPD layers on silver and gold
title_sort surface conductivity changes during the electrochemical adsorption of upd layers on silver and gold
url http://hdl.handle.net/20.500.12110/paper_00396028_v203_n1-2_p186_Romeo
work_keys_str_mv AT romeofm surfaceconductivitychangesduringtheelectrochemicaladsorptionofupdlayersonsilverandgold
AT tucceriri surfaceconductivitychangesduringtheelectrochemicaladsorptionofupdlayersonsilverandgold
AT posadasd surfaceconductivitychangesduringtheelectrochemicaladsorptionofupdlayersonsilverandgold
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