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Incommensurate spin order in the metallic perovskite MnVO3

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posted on 24.04.2015, 13:47 by Mikael Markkula, Angel M. Arevalo-Lopez, Anna KusmartsevaAnna Kusmartseva, Jennifer A. Rodgers, Clemens Ritter, Hua Wu, J. Paul Attfield
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.

Funding

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.

History

School

  • Science

Department

  • Physics

Published in

Physical Review B - Condensed Matter and Materials Physics

Volume

84

Issue

9

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.

Publisher

© American Physical Society

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2011

Notes

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.

ISSN

1098-0121

eISSN

1550-235X

Language

en

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