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DC Field | Value | Language |
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dc.contributor.author | Salinas, H. D. | - |
dc.contributor.author | Restrepo, Johans | - |
dc.contributor.author | Iglesias, Òscar | - |
dc.date.accessioned | 2018-11-12T18:07:46Z | - |
dc.date.available | 2018-11-12T18:07:46Z | - |
dc.date.issued | 2018-07-06 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | http://hdl.handle.net/2445/126026 | - |
dc.description.abstract | We have investigated the equilibrium states of ferromagnetic single wall nanotubes by means of atomistic Monte Carlo simulations of a zig-zag lattice of Heisenberg spins on the surface of a cylinder. The main focus of our study is to determine how the competition between short-range exchange (J) and long-range dipolar (D) interactions influences the low temperature magnetic order of the nanotubes as well as the thermal-driven transitions involved. Apart from the uniform and vortex states occurring for dominant J or D, we find that helical states become stable for a range of intermediate values of γ = D/J that depends on the radius and length of the nanotube. Introducing a vorticity order parameter to better characterize helical and vortex states, we find the pseudo-critical temperatures for the transitions between these states and we establish the magnetic phase diagrams of their stability regions as a function of the nanotube aspect ratio. Comparison of the energy of the states obtained by simulation with those of simpler theoretical structures that interpolate continuously between them, reveals a high degree of metastability of the helical structures that might be relevant for their reversal modes. | - |
dc.format.extent | 15 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Nature Publishing Group | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1038/s41598-018-28598-1 | - |
dc.relation.ispartof | Scientific Reports, 2018, vol. 8, p. 10275 | - |
dc.relation.uri | https://doi.org/10.1038/s41598-018-28598-1 | - |
dc.rights | cc-by (c) Salinas, H. D. et al., 2018 | - |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es | - |
dc.source | Articles publicats en revistes (Física de la Matèria Condensada) | - |
dc.subject.classification | Nanoestructures | - |
dc.subject.classification | Moments dipolars | - |
dc.subject.classification | Magnetisme | - |
dc.subject.other | Nanostructures | - |
dc.subject.other | Dipole moments | - |
dc.subject.other | Magnetism | - |
dc.title | Change in the magnetic configurations of tubular nanostructures by tuning dipolar interactions | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 680610 | - |
dc.date.updated | 2018-11-12T18:07:46Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
dc.identifier.pmid | 29980728 | - |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
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File | Description | Size | Format | |
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680610.pdf | 3.72 MB | Adobe PDF | View/Open |
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