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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.
Original language | English |
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Article number | 094450 |
Pages (from-to) | - |
Number of pages | 5 |
Journal | Physical review B |
Volume | 84 |
Issue number | 9 |
DOIs | |
Publication status | Published - 28 Sept 2011 |
Keywords / Materials (for Non-textual outputs)
- HIGH-PRESSURE
- PBVO3
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Dive into the research topics of 'Incommensurate spin order in the metallic perovskite MnVO3'. Together they form a unique fingerprint.Projects
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High Pressure Studies of Charge Ordered Materials
Kamenev, K. (Principal Investigator), Attfield, P. (Co-investigator) & Monthoux, P. (Co-investigator)
1/03/08 → 28/05/11
Project: Research