Electronic versus phononic friction of xenon on silver

Detalhes bibliográficos
Autor(a) principal: Liebsch, Ansgar
Data de Publicação: 1999
Outros Autores: Goncalves, Sebastian, Kiwi, Miguel
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/104250
Resumo: Molecular dynamics simulations of a Xe monolayer sliding on Ag(001) and Ag(111) are carried out in order to ascertain the microscopic origin of friction. For several values of the electronic contribution to the friction of individual Xe atoms, the intraoverlayer phonon dissipation is calculated as a function of the corrugation amplitude of the substrate potential, which is a pertinent parameter to consider. Within the accuracy of the numerical results and the uncertainty with which the values of the relevant parameters are known at present, we conclude that electronic and phononic dissipation channels are of similar importance. While phonon friction gives rise to the rapid variation with coverage, the electronic friction provides a roughly coverage-independent contribution to the overall sliding friction.
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spelling Liebsch, AnsgarGoncalves, SebastianKiwi, Miguel2014-10-08T02:11:00Z19991098-0121http://hdl.handle.net/10183/104250000269431Molecular dynamics simulations of a Xe monolayer sliding on Ag(001) and Ag(111) are carried out in order to ascertain the microscopic origin of friction. For several values of the electronic contribution to the friction of individual Xe atoms, the intraoverlayer phonon dissipation is calculated as a function of the corrugation amplitude of the substrate potential, which is a pertinent parameter to consider. Within the accuracy of the numerical results and the uncertainty with which the values of the relevant parameters are known at present, we conclude that electronic and phononic dissipation channels are of similar importance. While phonon friction gives rise to the rapid variation with coverage, the electronic friction provides a roughly coverage-independent contribution to the overall sliding friction.application/pdfengPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 60, no. 7 (Aug. 1999), p. 5034-5043Dinâmica molecularPrataXenonAtrito cinéticoElectronic versus phononic friction of xenon on silverEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000269431.pdf000269431.pdfTexto completo (inglês)application/pdf160434http://www.lume.ufrgs.br/bitstream/10183/104250/1/000269431.pdf31da711e352689e918653f0e49426070MD51TEXT000269431.pdf.txt000269431.pdf.txtExtracted Texttext/plain46637http://www.lume.ufrgs.br/bitstream/10183/104250/2/000269431.pdf.txtdfc3f2f728207362a2360cd9afe68576MD52THUMBNAIL000269431.pdf.jpg000269431.pdf.jpgGenerated Thumbnailimage/jpeg1971http://www.lume.ufrgs.br/bitstream/10183/104250/3/000269431.pdf.jpg42841c99b9368171e576da8a1739f81fMD5310183/1042502024-05-19 05:46:10.109035oai:www.lume.ufrgs.br:10183/104250Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-05-19T08:46:10Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Electronic versus phononic friction of xenon on silver
title Electronic versus phononic friction of xenon on silver
spellingShingle Electronic versus phononic friction of xenon on silver
Liebsch, Ansgar
Dinâmica molecular
Prata
Xenon
Atrito cinético
title_short Electronic versus phononic friction of xenon on silver
title_full Electronic versus phononic friction of xenon on silver
title_fullStr Electronic versus phononic friction of xenon on silver
title_full_unstemmed Electronic versus phononic friction of xenon on silver
title_sort Electronic versus phononic friction of xenon on silver
author Liebsch, Ansgar
author_facet Liebsch, Ansgar
Goncalves, Sebastian
Kiwi, Miguel
author_role author
author2 Goncalves, Sebastian
Kiwi, Miguel
author2_role author
author
dc.contributor.author.fl_str_mv Liebsch, Ansgar
Goncalves, Sebastian
Kiwi, Miguel
dc.subject.por.fl_str_mv Dinâmica molecular
Prata
Xenon
Atrito cinético
topic Dinâmica molecular
Prata
Xenon
Atrito cinético
description Molecular dynamics simulations of a Xe monolayer sliding on Ag(001) and Ag(111) are carried out in order to ascertain the microscopic origin of friction. For several values of the electronic contribution to the friction of individual Xe atoms, the intraoverlayer phonon dissipation is calculated as a function of the corrugation amplitude of the substrate potential, which is a pertinent parameter to consider. Within the accuracy of the numerical results and the uncertainty with which the values of the relevant parameters are known at present, we conclude that electronic and phononic dissipation channels are of similar importance. While phonon friction gives rise to the rapid variation with coverage, the electronic friction provides a roughly coverage-independent contribution to the overall sliding friction.
publishDate 1999
dc.date.issued.fl_str_mv 1999
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 60, no. 7 (Aug. 1999), p. 5034-5043
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