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Excitation Spectra in Crystal Plasticity

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Ovaska, Markus
dc.contributor.author Lehtinen, Arttu
dc.contributor.author Alava, Mikko J.
dc.contributor.author Laurson, Lasse
dc.contributor.author Zapperi, Stefano
dc.date.accessioned 2018-02-09T10:07:11Z
dc.date.available 2018-02-09T10:07:11Z
dc.date.issued 2017-12-27
dc.identifier.citation Ovaska , M , Lehtinen , A , Alava , M J , Laurson , L & Zapperi , S 2017 , ' Excitation Spectra in Crystal Plasticity ' , Physical Review Letters , vol. 119 , no. 26 , 265501 , pp. 1-5 . https://doi.org/10.1103/PhysRevLett.119.265501 en
dc.identifier.issn 0031-9007
dc.identifier.issn 1079-7114
dc.identifier.other PURE UUID: e03ec5a8-de47-4e70-add6-03250703dcf3
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/e03ec5a8-de47-4e70-add6-03250703dcf3
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85039713642&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/17030403/PhysRevLett.119.265501.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/30009
dc.description.abstract Plastically deforming crystals exhibit scale-free fluctuations that are similar to those observed in driven disordered elastic systems close to depinning, but the nature of the yielding critical point is still debated. Here, we study the marginal stability of ensembles of dislocations and compute their excitation spectrum in two and three dimensions. Our results show the presence of a singularity in the distribution of excitation stresses, i.e., the stress needed to make a localized region unstable, that is remarkably similar to the one measured in amorphous plasticity and spin glasses. These results allow us to understand recent observations of extended criticality in bursty crystal plasticity and explain how they originate from the presence of a pseudogap in the excitation spectrum. en
dc.format.extent 1-5
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Physical Review Letters en
dc.relation.ispartofseries Volume 119, issue 26 en
dc.rights openAccess en
dc.title Excitation Spectra in Crystal Plasticity en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.identifier.urn URN:NBN:fi:aalto-201802091506
dc.identifier.doi 10.1103/PhysRevLett.119.265501
dc.type.version publishedVersion

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