Glass transition in a two-dimensional system of magnetic colloids


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KÖNIG, Hans, Klaus ZAHN, Georg MARET, 2004. Glass transition in a two-dimensional system of magnetic colloids. SLOW DYNAMICS IN COMPLEX SYSTEMS: 3rd International Symposium on Slow Dynamics in Complex Systems. Sendai (Japan). In: AIP Conference Proceedings. AIP, pp. 40-45. eISSN 0094-243X. Available under: doi: 10.1063/1.1764057

@inproceedings{Konig2004Glass-17296, title={Glass transition in a two-dimensional system of magnetic colloids}, year={2004}, doi={10.1063/1.1764057}, publisher={AIP}, booktitle={AIP Conference Proceedings}, pages={40--45}, author={König, Hans and Zahn, Klaus and Maret, Georg} }

<rdf:RDF xmlns:dcterms="" xmlns:dc="" xmlns:rdf="" xmlns:bibo="" xmlns:dspace="" xmlns:foaf="" xmlns:void="" xmlns:xsd="" > <rdf:Description rdf:about=""> <dcterms:rights rdf:resource=""/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:rights>terms-of-use</dc:rights> <dc:date rdf:datatype="">2012-05-03T12:44:26Z</dc:date> <bibo:uri rdf:resource=""/> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dcterms:title>Glass transition in a two-dimensional system of magnetic colloids</dcterms:title> <dc:creator>König, Hans</dc:creator> <dc:contributor>Zahn, Klaus</dc:contributor> <dcterms:issued>2004</dcterms:issued> <dc:language>eng</dc:language> <dc:contributor>König, Hans</dc:contributor> <dcterms:bibliographicCitation>First publ. in: Slow dynamics in complex systems : Third International Symposium on Slow Dynamics in Complex Systems, Sendai, Japan, 3 - 8 Nov. 2003 / eds.: Michio Tokuyama ... - Melville, NY : American Inst. of Physics, 2004. - S. 40-45. - (AIP conference proceedings ; 708). - ISBN 0-7354-0183-7</dcterms:bibliographicCitation> <dcterms:available rdf:datatype="">2012-05-03T12:44:26Z</dcterms:available> <dc:creator>Maret, Georg</dc:creator> <dcterms:isPartOf rdf:resource=""/> <dc:creator>Zahn, Klaus</dc:creator> <dcterms:hasPart rdf:resource=""/> <dcterms:abstract xml:lang="eng">We describe experiments on binary mixtures of superparamagnetic colloidal particles confined by gravity to a flat horizontal water-air interface. The colloids repel each other because of their magnetic dipole moments induced by a vertical external magnetic field B. By tuning B, the effective temperature of the system can be adjusted over several orders of magnitude. Particle coordinates are monitored by video-microscopy over more than five decades in time. Measured radial pair-distribution functions g(r) and mean-square displacements illustrate that this system is an ideal model of a two-dimensional (2D) glass former. We find that the effects of small amounts of aggregated particles only weakly affect the averaged structure and dynamics. Locally, a small number of elementary structural elements are observed each characterized by a special triangular shape. These triangles arrange in dense mostly space-filling arrays and account for the essential features of g(r). The long-time α-relaxation is related to drifts of arrays as well as erosion due to single particle and collective hopping events.</dcterms:abstract> <dspace:isPartOfCollection rdf:resource=""/> <dc:contributor>Maret, Georg</dc:contributor> <dspace:hasBitstream rdf:resource=""/> </rdf:Description> </rdf:RDF>

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