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Density functional calculations of hole induced long ranged ferromagnetic ordering in Mn doped Cd28Se28 nanocluster
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
2010 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 96, no 5, 052506- p.Article in journal (Refereed) Published
Abstract [en]

We have investigated the possibility of long ranged ferromagnetic ordering in Mn doped Cd28Se28 nanocluster using density functional approach. Following the band repulsion theory we have explained that magnetic coupling between Mn atoms substituted in Cd sites is antiferromagnetic and short ranged. However, long ranged ferromagnetic coupling is possible via additional hole doping which leads to the spin splitting of the valence band. In this class of magnetic nanoclusters, additional hole doping induces spin polarization of host states at large distance. This property can lead to molecular magnets with tunable magnetic properties.

Place, publisher, year, edition, pages
2010. Vol. 96, no 5, 052506- p.
Keyword [en]
antiferromagnetism, cadmium compounds, density functional theory, doping, long-range order, manganese, spin polarised transport, valence bands
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-138058DOI: 10.1063/1.3299016ISI: 000274319500065OAI: oai:DiVA.org:uu-138058DiVA: diva2:378847
Available from: 2010-12-16 Created: 2010-12-16 Last updated: 2012-03-28Bibliographically approved

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