Dynamical Correlations near Dislocation Jamming

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Laurson, Lasse
dc.contributor.author Miguel, M.-Carmen
dc.contributor.author Alava, Mikko J.
dc.date.accessioned 2015-11-25T10:02:07Z
dc.date.available 2015-11-25T10:02:07Z
dc.date.issued 2010
dc.identifier.citation Laurson, Lasse & Miguel, M.-Carmen & Alava, Mikko J. 2010. Dynamical Correlations near Dislocation Jamming. Physical Review Letters. Volume 105, Issue 1. 015501/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.105.015501. en
dc.identifier.issn 0031-9007 (printed)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/18761
dc.description.abstract Dislocation assemblies exhibit a jamming or yielding transition at a critical external shear stress value σ=σc. Here we study the heterogeneous and collective nature of dislocation dynamics within a crystal plasticity model close to σc, by considering the first-passage properties of the dislocation dynamics. As the transition is approached in the moving phase, the first-passage time distribution exhibits scaling, and a related peak dynamical susceptibility χ∗4 diverges as χ∗4∼(σ−σc)−α, with α≈1.1. We relate this scaling to an avalanche description of the dynamics. While the static structural correlations are found to be independent of the external stress, we identify a diverging dynamical correlation length ξy in the direction perpendicular to the dislocation glide motion. en
dc.format.extent 015501/1-4
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 105, Issue 1
dc.rights © 2010 American Physical Society (APS). This is the accepted version of the following article: Laurson, Lasse & Miguel, M.-Carmen & Alava, Mikko J. 2010. Dynamical Correlations near Dislocation Jamming. Physical Review Letters. Volume 105, Issue 1. 015501/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.105.015501, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.105.015501. en
dc.subject.other Physics en
dc.title Dynamical Correlations near Dislocation Jamming en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.rights.holder American Physical Society (APS)
dc.contributor.school Perustieteiden korkeakoulu fi
dc.contributor.school School of Science en
dc.contributor.department Teknillisen fysiikan laitos fi
dc.contributor.department Department of Applied Physics en
dc.subject.keyword plasticity en
dc.subject.keyword dislocation dynamics en
dc.identifier.urn URN:NBN:fi:aalto-201511255274
dc.type.dcmitype text en
dc.identifier.doi 10.1103/physrevlett.105.015501
dc.type.version Final published version en


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