Incommensurate spin density wave in metallic V[sub 2[minus][ital y]]O[sub 3]
Journal Article
·
· Physical Review Letters; (United States)
- The Johns Hopkins University, Baltimore, Maryland 21218 (United States) National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States) The University of Chicago, Chicago, Illinois 60637 (United States) AT T Bell Laboratories, Murray Hill, New Jersey 07974 (United States) ARDEC, Picatinny Arsenal, New Jersey 07806 (United States) Purdue University, West Lafayette, Indiana 47907 (United States)
We show by neutron diffraction that metallic V[sub 2[minus]7]O[sub 3] develops a spin density wave below [ital T][sub [ital N]][approx]9 K with incommensurate wave vector [ital q][approx]1.7[ital c][sup *] and an ordered moment of 0.15[mu][sub [ital B]]. The weak ordering phenomenon is accompanied by strong, nonresonant spin fluctuations with a velocity [ital c]=67(4) meV A. The spin correlations of the metal are very different from those of the insulator and place V[sub 2[minus][ital y]]O[sub 3] in a distinct class of Motte-Hubbard systems where the wave vector for magnetic order in the metal is far from a high symmetry commensurate reciprocal lattice point.
- DOE Contract Number:
- FG02-90ER45427
- OSTI ID:
- 6049996
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:5; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
COHERENT SCATTERING
DIAGRAMS
DIFFRACTION
FLUCTUATIONS
MAGNETIC MOMENTS
MAGNETISM
MAGNETIZATION
NEUTRON DIFFRACTION
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
SCATTERING
SPIN WAVES
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES
VARIATIONS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
COHERENT SCATTERING
DIAGRAMS
DIFFRACTION
FLUCTUATIONS
MAGNETIC MOMENTS
MAGNETISM
MAGNETIZATION
NEUTRON DIFFRACTION
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
SCATTERING
SPIN WAVES
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES
VARIATIONS