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Temperature-dependent magnetoresistance of magnetic tunnel junctions with ultraviolet light-assisted oxidized barriers

Temperature-dependent magnetoresistance of magnetic tunnel junctions with ultraviolet light-assisted oxidized barriers

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MAY, Ulrich, K. SAMM, Harish KITTUR, Jan O. HAUCH, Raffaella CALARCO, Ulrich RÜDIGER, Gernot GÜNTHERODT, 2001. Temperature-dependent magnetoresistance of magnetic tunnel junctions with ultraviolet light-assisted oxidized barriers. In: Applied Physics Letters. 78(14), pp. 2026-2028. Available under: doi: 10.1063/1.1361098

@article{May2001Tempe-8873, title={Temperature-dependent magnetoresistance of magnetic tunnel junctions with ultraviolet light-assisted oxidized barriers}, year={2001}, doi={10.1063/1.1361098}, number={14}, volume={78}, journal={Applied Physics Letters}, pages={2026--2028}, author={May, Ulrich and Samm, K. and Kittur, Harish and Hauch, Jan O. and Calarco, Raffaella and Rüdiger, Ulrich and Güntherodt, Gernot} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/8873"> <dc:creator>May, Ulrich</dc:creator> <dc:creator>Calarco, Raffaella</dc:creator> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <dcterms:abstract xml:lang="eng">Co(10 nm)/AlOx(nominally 2 nm)/Co(20 nm) tunnel junctions have been prepared under ultrahigh vacuum conditions applying a shadow mask technique. An ultraviolet light-assisted oxidation process of the AlOx barrier has been optimized by in situ x-ray photoelectron spectroscopy, in conjunction with temperature-dependent tunneling magnetoresistance measurements. Optimum-oxidized tunnel junctions show a magnetoresistance of 20% at 285 K, and up to 38% at 100 K. For under-oxidized samples, with a remaining Al layer between the Co bottom electrode and the AlOx barrier, the tunneling magnetoresistance decreases more rapidly with increasing temperature than observed for the over-oxidized samples. The resistance × area product of optimum-oxidized tunneling junctions exhibits a minimum, and increases for under- and over-oxidized samples.</dcterms:abstract> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dc:contributor>Rüdiger, Ulrich</dc:contributor> <dc:rights>deposit-license</dc:rights> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:51:13Z</dc:date> <dcterms:bibliographicCitation>First publ. in: Applied Physics Letters 78 (2001), 14, pp. 2026-2028</dcterms:bibliographicCitation> <dcterms:title>Temperature-dependent magnetoresistance of magnetic tunnel junctions with ultraviolet light-assisted oxidized barriers</dcterms:title> <dc:language>eng</dc:language> <dc:creator>Rüdiger, Ulrich</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:51:13Z</dcterms:available> <dc:contributor>Hauch, Jan O.</dc:contributor> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/8873"/> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dcterms:issued>2001</dcterms:issued> <dc:creator>Güntherodt, Gernot</dc:creator> <dc:contributor>Güntherodt, Gernot</dc:contributor> <dc:contributor>Kittur, Harish</dc:contributor> <dc:creator>Hauch, Jan O.</dc:creator> <dc:format>application/pdf</dc:format> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/8873/1/Temperature_dependent_magnetoresistance_of_magnetic_tunnel_junctions_with_ultraviolet_light_assisted_oxidized_barriers.pdf"/> <dc:creator>Samm, K.</dc:creator> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/8873/1/Temperature_dependent_magnetoresistance_of_magnetic_tunnel_junctions_with_ultraviolet_light_assisted_oxidized_barriers.pdf"/> <dc:contributor>Calarco, Raffaella</dc:contributor> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/41"/> <dc:contributor>May, Ulrich</dc:contributor> <dc:contributor>Samm, K.</dc:contributor> <dc:creator>Kittur, Harish</dc:creator> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> </rdf:Description> </rdf:RDF>

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