Quasiantiferromagnetic 120° Néel state in two-dimensional clusters of dipole-quadrupole-interacting particles on a hexagonal lattice

Kurzanzeige
dc.contributor.authorMikuszeit, Nikolaideu
dc.contributor.authorBaraban, Larysadeu
dc.contributor.authorVedmedenko, Elena Y.deu
dc.contributor.authorErbe, Artur
dc.contributor.authorLeiderer, Paul
dc.contributor.authorWiesendanger, Rolanddeu
dc.date.accessioned2011-03-24T14:55:06Zdeu
dc.date.available2011-03-24T14:55:06Zdeu
dc.date.issued2009deu
dc.description.abstractThe magnetostatic interactions of colloidal particles, capped with radially magnetized Co/Pt multilayers, are modeled. Motivated by experiment the particles are arranged in microscopic two-dimensional clusters on a hexagonal lattice and are free to rotate. The thermodynamically stable states of clusters containing up to 108 particles are calculated theoretically by means of Monte Carlo simulations in the framework of multipole expansion. It is shown analytically that radially magnetized hemispheres have higher-order multipole moments beyond the dipole. Depending on geometrical details also even order moments appear. The even order moments break the inversion symmetry of the magnetic potential of a single particle. For a specific mixing ratio of dipole and quadrupole moments, the experimentally observed antiferromagnetic 120° Néel state in the clusters is found.eng
dc.description.versionpublished
dc.format.mimetypeapplication/pdfdeu
dc.identifier.citationFirst publ. in: Physical Review B 80 (2009), 014402deu
dc.identifier.doi10.1103/PhysRevB.80.014402
dc.identifier.ppn312396112deu
dc.identifier.urihttp://kops.uni-konstanz.de/handle/123456789/5343
dc.language.isoengdeu
dc.legacy.dateIssued2009deu
dc.rightsterms-of-usedeu
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/deu
dc.subjecttwo-dimensional clustersdeu
dc.subjectmultipole simulationdeu
dc.subject.ddc530deu
dc.subject.gndKolloiddeu
dc.subject.pacs41.20.Gzdeu
dc.subject.pacs75.10.-bdeu
dc.subject.pacs75.50.Mmdeu
dc.subject.pacs47.57.J-deu
dc.titleQuasiantiferromagnetic 120° Néel state in two-dimensional clusters of dipole-quadrupole-interacting particles on a hexagonal latticeeng
dc.typeJOURNAL_ARTICLEdeu
dspace.entity.typePublication
kops.citation.bibtex
@article{Mikuszeit2009Quasi-5343,
  year={2009},
  doi={10.1103/PhysRevB.80.014402},
  title={Quasiantiferromagnetic 120° Néel state in two-dimensional clusters of dipole-quadrupole-interacting particles on a hexagonal lattice},
  volume={80},
  journal={Physical Review B},
  author={Mikuszeit, Nikolai and Baraban, Larysa and Vedmedenko, Elena Y. and Erbe, Artur and Leiderer, Paul and Wiesendanger, Roland},
  note={Article Number: 14402}
}
kops.citation.iso690MIKUSZEIT, Nikolai, Larysa BARABAN, Elena Y. VEDMEDENKO, Artur ERBE, Paul LEIDERER, Roland WIESENDANGER, 2009. Quasiantiferromagnetic 120° Néel state in two-dimensional clusters of dipole-quadrupole-interacting particles on a hexagonal lattice. In: Physical Review B. 2009, 80, 14402. Available under: doi: 10.1103/PhysRevB.80.014402deu
kops.citation.iso690MIKUSZEIT, Nikolai, Larysa BARABAN, Elena Y. VEDMEDENKO, Artur ERBE, Paul LEIDERER, Roland WIESENDANGER, 2009. Quasiantiferromagnetic 120° Néel state in two-dimensional clusters of dipole-quadrupole-interacting particles on a hexagonal lattice. In: Physical Review B. 2009, 80, 14402. Available under: doi: 10.1103/PhysRevB.80.014402eng
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kops.sourcefield.plainPhysical Review B. 2009, 80, 14402. Available under: doi: 10.1103/PhysRevB.80.014402eng
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