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Title: Electrostatic Nature of Size Dependences of Adsorption Properties of Ytterbium Nanofilms Grown on the Surface of Silicon: the CO–Yb–Si(111) System

Abstract

The adsorption of CO molecules onto ytterbium nanofilms with their thickness varying from 1 to 16 monolayers is studied. The dependences of the number of adsorbed CO molecules (adsorption isotherms) and the work function of ytterbium films on the dose of carbon monoxide are examined. It is demonstrated that both the number of adsorbed molecules and the work function depend (under equal conditions) on the nanofilm thickness; in other words, a size effect is revealed. It is found that this size effect is induced by the electrostatic interaction between the conduction electrons of ytterbium and the electrons localized on the nanofilm surface, which establish bonding between the surface and CO molecules. This interaction depends on the film thickness and limits the number of CO molecules that may be adsorbed onto the surface of a film with a given thickness.

Authors:
;  [1]
  1. Ioffe Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22771069
Resource Type:
Journal Article
Journal Name:
Physics of the Solid State
Additional Journal Information:
Journal Volume: 60; Journal Issue: 7; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7834
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ADSORPTION; ADSORPTION ISOTHERMS; BONDING; CARBON MONOXIDE; ELECTROSTATICS; INTERACTIONS; MOLECULES; NANOSTRUCTURES; SILICON COMPOUNDS; SIMULATION; SURFACES; THICKNESS; THIN FILMS; WORK FUNCTIONS; YTTERBIUM COMPOUNDS

Citation Formats

Mittsev, M. A., E-mail: M.Mittsev@mail.ioffe.ru, and Kuz’min, M. V. Electrostatic Nature of Size Dependences of Adsorption Properties of Ytterbium Nanofilms Grown on the Surface of Silicon: the CO–Yb–Si(111) System. United States: N. p., 2018. Web. doi:10.1134/S1063783418070193.
Mittsev, M. A., E-mail: M.Mittsev@mail.ioffe.ru, & Kuz’min, M. V. Electrostatic Nature of Size Dependences of Adsorption Properties of Ytterbium Nanofilms Grown on the Surface of Silicon: the CO–Yb–Si(111) System. United States. doi:10.1134/S1063783418070193.
Mittsev, M. A., E-mail: M.Mittsev@mail.ioffe.ru, and Kuz’min, M. V. Sun . "Electrostatic Nature of Size Dependences of Adsorption Properties of Ytterbium Nanofilms Grown on the Surface of Silicon: the CO–Yb–Si(111) System". United States. doi:10.1134/S1063783418070193.
@article{osti_22771069,
title = {Electrostatic Nature of Size Dependences of Adsorption Properties of Ytterbium Nanofilms Grown on the Surface of Silicon: the CO–Yb–Si(111) System},
author = {Mittsev, M. A., E-mail: M.Mittsev@mail.ioffe.ru and Kuz’min, M. V.},
abstractNote = {The adsorption of CO molecules onto ytterbium nanofilms with their thickness varying from 1 to 16 monolayers is studied. The dependences of the number of adsorbed CO molecules (adsorption isotherms) and the work function of ytterbium films on the dose of carbon monoxide are examined. It is demonstrated that both the number of adsorbed molecules and the work function depend (under equal conditions) on the nanofilm thickness; in other words, a size effect is revealed. It is found that this size effect is induced by the electrostatic interaction between the conduction electrons of ytterbium and the electrons localized on the nanofilm surface, which establish bonding between the surface and CO molecules. This interaction depends on the film thickness and limits the number of CO molecules that may be adsorbed onto the surface of a film with a given thickness.},
doi = {10.1134/S1063783418070193},
journal = {Physics of the Solid State},
issn = {1063-7834},
number = 7,
volume = 60,
place = {United States},
year = {2018},
month = {7}
}