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Onset of spin-density-wave antiferromagnetism in Cr/V multilayers
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics.
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2007 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 76, no 2, 024421- p.Article in journal (Refereed) Published
Abstract [en]

Spin-density-wave (SDW) magnetism in a series of Cr/V heterostructures with different Cr thicknesses was systematically investigated by combined resistivity, neutron, and synchrotron scattering measurements. We show that the onset of the bulklike SDW state comes through several necessary steps from a paramagnetic state through a commensurate SDW to an incommensurate SDW. The Néel temperature for the incommensurate SDW is found to scale with Cr thickness and reaches the bulk value at a Cr thickness of about 2000 Å. The proximity effect from Cr/V interfaces is found to lead to (i) the appearance of a 50-Å magnetically dead Cr layer near Cr/V interfaces and (ii) suppression of the spin-flip transition and stabilization of a single-domain SDW with out-of-plane spins and out-of-plane propagation wave vector. Finally, we show that the SDW period increases with decreasing Cr thickness and becomes temperature independent in sufficiently thin Cr layers.

Place, publisher, year, edition, pages
2007. Vol. 76, no 2, 024421- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-83704DOI: 10.1103/PhysRevB.76.024421ISI: 000248496200075OAI: oai:DiVA.org:uu-83704DiVA: diva2:111612
Available from: 2007-09-11 Created: 2007-09-11 Last updated: 2011-01-26Bibliographically approved

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Hjörvarsson, BjörgvinLiebig, Andreas

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