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Magnetic Order and Dynamics in Stripe-Ordered La2-xSrxNiO4

A. T. Boothroyd·P. G. Freeman·D. Prabhakaran·M. Enderle·J. Kulda
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Abstract

We have studied magnetic correlations in several compositions of stripe-ordered La2-xSrxNiO4. In this paper we show how polarized-neutron scattering has helped uncover important features of the magnetic ordering and spin dynamics. In particular, polarization analysis has enabled us (1) to characterize a spin reorientation transition, (2) to identify anisotropy gaps in the spin excitation spectrum, and (3) to investigate an anomalous dip in the spin-wave intensity suggestive of coupling between collective spin and charge excitations.

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A. T. Boothroyd, P. G. Freeman, D. Prabhakaran, M. Enderle, J. Kulda. 2003-08-29. Magnetic Order and Dynamics in Stripe-Ordered La2-xSrxNiO4. https://doi.org/10.1016/j.physb.2003.11.007

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