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SPIN-WAVES IN THE ONE-SPIN-SLIP PHASE OF HOLMIUM

MCMORROW, DF; PATTERSON, C; GODFRIN, H; JEHAN, DA; (1991) SPIN-WAVES IN THE ONE-SPIN-SLIP PHASE OF HOLMIUM. EUROPHYS LETT , 15 (5) 541 - 546.

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Abstract

The dispersion relationship for spin waves propagating the c-axis in the one-spin-slip phase of holmium at 19.5 K has been measured using a neutron triple-axis spectrometer. A gap in the spin-wave spectrum of approximately 0.6 meV is resolved clearly at a reduced wave vector transfer with respect to the magnetic unit cell of q(m) = (5/11)c*, and the presence of a second gap at q(m) = (6/11)c* is inferred from the anomalous behaviour of the intrinsic spin-wave width. Our results are discussed in the light of recent calculations of the spin waves in holmium.

Type:Article
Title:SPIN-WAVES IN THE ONE-SPIN-SLIP PHASE OF HOLMIUM
Keywords:SPIN WAVES, SPIN ARRANGEMENTS IN MAGNETICALLY ORDERED MATERIALS (NEUTRON STUDIES, ETC), COLLECTIVE EFFECTS, MAGNETIC-STRUCTURE
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology

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