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Incommensurate spin density wave in metallic V_(2-y)O_3

Bao, Wei and Broholm, C. and Carter, S. A. and Rosenbaum, T. F. and Aeppli, G. and Trevino, S. F. and Metcalf, P. and Honig, J. M. and Spalek, J. (1993) Incommensurate spin density wave in metallic V_(2-y)O_3. Physical Review Letters, 71 (5). pp. 766-769. ISSN 0031-9007. doi:10.1103/PhysRevLett.71.766.

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We show by neutron diffraction that metallic V_(2-y)O_3 develops a spin density wave below T_N≊9 K with incommensurate wave vector q≊1.7c* and an ordered moment of 0.15μ_B. The weak ordering phenomenon is accompanied by strong, nonresonant spin fluctuations with a velocity c = 67(4) meV Å. The spin correlations of the metal are very different from those of the insulator and place V_(2-y)O_3 in a distinct class of Mott-Hubbard systems where the wave vector for magnetic order in the metal is far from a high symmetry commensurate reciprocal lattice point.

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Alternate Title:Incommensurate spin density wave in metallic V2-yO3
Additional Information:© 1993 The American Physical Society. Received 3 May 1993. It is a pleasure to thank R. W. Erwin, J. W. Lynn, J. M. Rowe, and J. J. Rush for ideas and encouragement. C.B. thanks the Aspen Center for Physics where some of this work was performed. The work at The University of Chicago was supported by NSF DMR 92-04820. J.M.H. and J.S. were supported on MISCON Grant No. DE-FG02-90ER45427.
Funding AgencyGrant Number
NSFDMR 92-04820
Department of Energy (DOE)DE-FG02-90ER45427
Issue or Number:5
Classification Code:PACS numbers: 71.30.+h, 75.30.Fv, 75.30.Kz
Record Number:CaltechAUTHORS:20140707-163037217
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47010
Deposited By: George Porter
Deposited On:10 Jul 2014 21:27
Last Modified:10 Nov 2021 17:33

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