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- Title:
Fincher\textendash{{Burke}} Excitations in Single-{{Q}} Chromium
- Document type:
- Zeitschriftenaufsatz
- Author(s):
- B̈oni, P.; Clementyev, E.; Stadler, C.; Roessli, B.; Shirane, G.; Werner, S.A.
- Abstract:
- . The low-energy excitations of incommensurate antiferromagnetic Cr have been investigated by means of high-resolution, inelastic neutron scattering with unpolarized, cold neutrons within an energy range E$<$9 meV. In agreement with previous measurements we observe Fincher\textendash{}Burke excitations in the transverse spin density wave phase that appear between the unresolved spin-wave peaks at the incommensurate positions Q$\pm$=(1$\pm\delta$,0,0). In contrast to the previous measurements, our high-resolution data shows that the Fincher\textendash{}Burke modes do not follow a linear dispersion. Therefore, they have nothing in common with the acoustic phonon branch. The major part of the scattering is concentrated in the range 4 meV
- Keywords:
- PACS: 75.30.Fv; 75.50.Ee; 75.40.Gb; 75.30.Ds
- Journal title:
- Applied Physics A
- Year:
- 2002
- Journal volume:
- 74
- Month:
- dec
- Journal issue:
- 1
- Pages contribution:
- s716
- Language:
- en
- Fulltext / DOI:
- doi:10.1007/s003390201625
- Print-ISSN:
- 1432-0630
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