Strain Relief in Cu-Pd Heteroepitaxy

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Lu, Yafeng Przybylski, M. Trushin, O. Wang, W. H. Barthel, J. Granato, E. Ying, S. C. Ala-Nissilä, Tapio 2015-04-29T09:01:24Z 2015-04-29T09:01:24Z 2005
dc.identifier.citation Lu, Yafeng & Przybylski, M. & Trushin, O. & Wang, W. H. & Barthel, J. & Granato, E. & Ying, S. C. & Ala-Nissilä, Tapio. 2005. Strain Relief in Cu-Pd Heteroepitaxy. Physical Review Letters. Volume 94, Issue 14. P. 146105/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.94.146105. en
dc.identifier.issn 0031-9007 (printed)
dc.description.abstract We present experimental and theoretical studies of Pd/Cu(100) and Cu/Pd(100) heterostructures in order to explore their structure and misfit strain relaxation. Ultrathin Pd and Cu films are grown by pulsed laser deposition at room temperature. For Pd/Cu, compressive strain is released by networks of misfit dislocations running in the [100] and [010] directions, which appear after a few monolayers (ML) already. In striking contrast, for Cu/Pd the tensile overlayer remains coherent up to about 9 ML, after which multilayer growth occurs. The strong asymmetry between tensile and compressive cases is in contradiction with continuum elasticity theory and is also evident in the structural parameters of the strained films. Molecular dynamics calculations based on classical many-body potentials confirm the pronounced tensile-compressive asymmetry and are in good agreement with the experimental data. en
dc.format.extent 146105/1-4
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society (APS) en
dc.relation.ispartofseries Physical Review Letters en
dc.relation.ispartofseries Volume 94, Issue 14
dc.rights © 2005 American Physical Society (APS). en
dc.subject.other Physics en
dc.title Strain Relief in Cu-Pd Heteroepitaxy en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.rights.holder American Physical Society (APS) Perustieteiden korkeakoulu fi School of Science en
dc.contributor.department Teknillisen fysiikan laitos fi
dc.contributor.department Department of Applied Physics en
dc.subject.keyword ultrathin Pd and Cu films en
dc.subject.keyword structures en
dc.subject.keyword strain relaxation en
dc.identifier.urn URN:NBN:fi:aalto-201504292500
dc.type.dcmitype text en
dc.identifier.doi 10.1103/physrevlett.94.146105
dc.type.version Final published version en

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