Spin Dynamics in an Ordered Stripe Phase
@article{Tranquada1997SpinDI, title={Spin Dynamics in an Ordered Stripe Phase}, author={John M. Tranquada and P. Wochner and Douglas J. Buttrey}, journal={Physical Review Letters}, year={1997}, volume={79}, pages={2133-2136} }
Inelastic neutron scattering has been used to measure the low-energy spin excitations in the ordered charge-stripe phase of La{sub 2}NiO{sub 4+{delta}} with {delta}=0.133 . Spin-wave-like excitations disperse away from the incommensurate magnetic superlattice points with a velocity {approximately}60{percent} of that in the {delta}=0 compound. Incommensurate inelastic peaks remain well resolved up to at least twice the magnetic ordering temperature. Paramagnetic scattering from a {delta}=0.105…
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