Investigation of the Presence of Charge Order in Magnetite by Measurement of the Sprin Wave Spectrum

Inelastic neutron scattering results on magnetite (Fe{sub 3}O{sub 4}) show a large splitting in the acoustic spin wave branch, producing a 7 meV gap midway to the Brillouin zone boundary at q = (0,0,1/2) and {h_bar}{omega} = 43 meV. The splitting occurs below the Verwey transition temperature, where...

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Veröffentlicht in:	Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2006-01, Vol.73 (17)
Hauptverfasser:	McQueeny, R. J., Yethiraj, Mohana, Montfrooij, W., Garner, J. S., Metcalf, P., Honig, J. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	ACOUSTICS BRILLOUIN ZONES CHARGE DENSITY CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY CRYSTAL STRUCTURE HEISENBERG MODEL INELASTIC SCATTERING IRON MAGNETITE NEUTRON DIFFRACTION SPIN WAVES SUPERLATTICES SYMMETRY TRANSITION TEMPERATURE
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