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Indirect magnetic coupling in light-element-doped single-walled carbon nanotubes
Univ Dublin Trinity Coll, Sch Phys. (Ctr Res Adapt Nanostruct & Nanodevices)
Univ Nantes, CNRS. (Inst Mat Jean Rouxel IMN)
Umeå University, Faculty of Science and Technology, Department of Physics. (Nanostructured carbon)
Univ Dublin Trinity Coll, Sch Phys. (Ctr Res Adapt Nanostruct & Nanodevices)
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2010 (English)In: ACS Nano, ISSN 1936-0851, E-ISSN 1936-086X, Vol. 4, no 9, 5081-5086 p.Article in journal (Refereed) Published
Abstract [en]

Single-walled carbon nanotubes substitutionally doped with the light-element phosphorus are synthesized and are investigated by electrical and nuclear magnetic resonance measurements. Decreased spin lattice relaxation times compared to undoped tubes point toward enhanced spin-sensitive scattering. Temperature dependence of the zero-bias conductance shows step-like features, a signature of scattering from a very low density (few sites per nanotube) of localized spin moments at oxidized phosphorus sites, consistent with density functional calculations. This supports recent predictions that localized magnetic moments must be indirectly magnetically coupled through the nanotube conduction electrons.

Place, publisher, year, edition, pages
Washington, DC, USA: American Chemical Society , 2010. Vol. 4, no 9, 5081-5086 p.
Keyword [en]
doped nanocarbon; magnetism; transport; NMR; spintronics; DFT
National Category
Physical Sciences
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-36999DOI: 10.1021/nn1009038ISI: 000282121000017OAI: oai:DiVA.org:umu-36999DiVA: diva2:357029
Available from: 2010-10-15 Created: 2010-10-15 Last updated: 2017-12-12Bibliographically approved

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