Theoretical study of the conductance of ferromagnetic atomic-sized contacts

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HÄFNER, Michael, Janne K. VILJAS, Diego FRUSTAGLIA, Fabian PAULY, Markus DREHER, Peter NIELABA, Juan Carlos CUEVAS, 2008. Theoretical study of the conductance of ferromagnetic atomic-sized contacts. In: Physical Review B. 77(10), 104409. ISSN 1098-0121. eISSN 1550-235X

@article{Hafner2008Theor-902, title={Theoretical study of the conductance of ferromagnetic atomic-sized contacts}, year={2008}, doi={10.1103/PhysRevB.77.104409}, number={10}, volume={77}, issn={1098-0121}, journal={Physical Review B}, author={Häfner, Michael and Viljas, Janne K. and Frustaglia, Diego and Pauly, Fabian and Dreher, Markus and Nielaba, Peter and Cuevas, Juan Carlos}, note={Article Number: 104409} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/902"> <dc:rights>deposit-license</dc:rights> <dc:contributor>Häfner, Michael</dc:contributor> <dcterms:issued>2008</dcterms:issued> <dc:contributor>Pauly, Fabian</dc:contributor> <dcterms:title>Theoretical study of the conductance of ferromagnetic atomic-sized contacts</dcterms:title> <dc:creator>Frustaglia, Diego</dc:creator> <dc:contributor>Dreher, Markus</dc:contributor> <dc:creator>Pauly, Fabian</dc:creator> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/902"/> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103416863-3868037-7"/> <dcterms:bibliographicCitation>Physical Review B ; 77 (2008), 10. - 104409</dcterms:bibliographicCitation> <dc:contributor>Cuevas, Juan Carlos</dc:contributor> <dc:creator>Dreher, Markus</dc:creator> <dc:contributor>Viljas, Janne K.</dc:contributor> <dcterms:abstract xml:lang="eng">In this work, we study theoretically the conductance of atomic contacts of the ferromagnetic 3d materials Fe, Co, and Ni. For this purpose, we employ a tight-binding model and we focus on the analysis of ideal contact geometries. In agreement with previous theoretical results, the 3d bands of these transition metals play the key role in the electrical conduction of atomic contacts. As a consequence, in the contact regime, there are partially open conductance channels and the conductance of the last plateau is typically above G0=2e2∕h. Furthermore, in this regime, there is no complete spin polarization of the current (i.e., both spin bands contribute to transport) and the amplitude of the conductance as well as its spin polarization are very sensitive to disorder in the contact geometry. Finally, we find that in the tunneling regime, a high spin polarization of the current can be achieved.</dcterms:abstract> <dc:creator>Viljas, Janne K.</dc:creator> <dc:language>eng</dc:language> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-22T17:51:49Z</dc:date> <dc:creator>Cuevas, Juan Carlos</dc:creator> <dc:creator>Nielaba, Peter</dc:creator> <dc:contributor>Nielaba, Peter</dc:contributor> <dc:contributor>Frustaglia, Diego</dc:contributor> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-22T17:51:49Z</dcterms:available> <dc:creator>Häfner, Michael</dc:creator> </rdf:Description> </rdf:RDF>

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