Shear-melting of a hexagonal columnar crystal by proliferation of dislocations

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dc.creatorRamos, L.
dc.creatorMolino, F.
dc.date2004-07-01
dc.date.accessioned2026-07-07T02:58:58Z
dc.date.available2026-07-07T02:58:58Z
dc.descriptionA hexagonal columnar crystal undergoes a shear-melting transition above a critical shear rate or stress. We combine the analysis of the shear-thinning regime below the melting with that of synchrotron X-ray scattering data under shear and propose the melting to be due to a proliferation of dislocations, whose density is determined by both techniques to vary as a power law of the shear rate with a 2/3 exponent, as expected for a creep model of crystalline solids. Moreover, our data suggest the existence under shear of a line hexatic phase, between the columnar crystal and the liquid phase.
dc.identifierhttps://arxiv.org/abs/cond-mat/0407030
dc.identifierhttp://arxiv.org/abs/cond-mat/0407030
dc.identifierPhys. Rev. Lett. 92 (2004) 018301
dc.identifierdoi:10.1103/PhysRevLett.92.018301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24328
dc.subjectSoft Condensed Matter
dc.titleShear-melting of a hexagonal columnar crystal by proliferation of dislocations
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