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Title: Incommensurate spin order in the metallic perovskite MnVO3
Authors: Markkula, Mikael
Arevalo-Lopez, Angel M.
Kusmartseva, Anna F.
Rodgers, Jennifer A.
Ritter, Clemens
Wu, Hua
Attfield, J. Paul
Issue Date: 2011
Publisher: © American Physical Society
Citation: MARKKULA, M. ... et al, 2011. Incommensurate spin order in the metallic perovskite MnVO3. Physical Review B - Condensed Matter and Materials Physics, 84 (9), 094450.
Abstract: Incommensurate Mn spin order has been discovered in the perovskite MnVO3 containing localized 3d5 Mn2+ and itinerant 3d1 V4+ states. This phase has a distorted Pnma crystal structure (a = 5.2741(6) Å, b = 7.4100(11) Å, and c = 5.1184(8) Å at 300 K) and is metallic at temperatures of 2-300 K and at pressures of up to 67 kbar. Neutron scattering reveals a (0.29 0 0) magnetic vector below the 46 K spin ordering transition, and both helical and spin density wave orderings are consistent with the diffraction intensities. Electronic structure calculations show large exchange splittings of the Mn and V 3d bands, and (kx 0 0) crossings of the Fermi energy by spin up and down V 3d bands may give rise to Ruderman-Kittel-Kasuya-Yosida coupling of Mn moments, in addition to their superexchange interactions. © 2011 American Physical Society.
Description: This article was published in the journal, Physical Review B [© American Physical Society]. It is also available at: http://dx.doi.org/10.1103/PhysRevB.84.094450.
Sponsor: We acknowledge the Engineering and Physical Sciences Research Council and Science and Technology Facilities Council for support and the provision of ESRF and ILL beam time, and the Leverhulme Trust for additional support.
Version: Published
DOI: 10.1103/PhysRevB.84.094450
URI: https://dspace.lboro.ac.uk/2134/17361
Publisher Link: http://dx.doi.org/10.1103/PhysRevB.84.094450
ISSN: 1098-0121
Appears in Collections:Published Articles (Physics)

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