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arXiv · cond-mat/9612007

Spin Dynamics in an Ordered Stripe Phase

J. M. Tranquada·P. Wochner·D. J. Buttrey
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Abstract

Inelastic neutron scattering has been used to measure the low-energy spin excitations in the ordered charge-stripe phase of La(2)NiO(4+d) with d=0.133. Spin-wave-like excitations disperse away from the incommensurate magnetic superlattice points with a velocity ~60% of that in the d=0 compound. Incommensurate inelastic peaks remain well-resolved up to at least twice the magnetic ordering temperature. Paramagnetic scattering from a d=0.105 sample, which has a Néel-ordered ground state, shows anomalies suggestive of incipient stripe correlations. Similarities between these results and measurements on superconducting cuprates are discussed.

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J. M. Tranquada, P. Wochner, D. J. Buttrey. 1997-09-09. Spin Dynamics in an Ordered Stripe Phase. https://doi.org/10.1103/physrevlett.79.2133

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