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Lack of Out-of-Plane Dispersion of the Magnetic Excitations of Charge-Stripe Ordered La2−xSrxNiO4+δ

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Freeman, Paul ORCID: 0000-0002-5376-8940, Prabhakaran, Dharmalingam and Turrini, Alexandra A. (2022) Lack of Out-of-Plane Dispersion of the Magnetic Excitations of Charge-Stripe Ordered La2−xSrxNiO4+δ. Journal of the Physical Society of Japan 91, (2022), 91 . p. 125004. ISSN 0031-9015

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Official URL: https://doi.org/10.7566/JPSJ.91.125004

Abstract

The dependence of the magnetic excitations in the out-of-NiO-plane direction of charge stripe ordered La2−xSrxNiO4+δ x = 0.3 and δ = 0.11 ± 0.01 were investigated by inelastic neutron scattering. No dispersion was observed for the magnetic excitations in the out-of-plane ð0; 0; lÞ direction of reciprocal space of La2−xSrxNiO4+δ, indicating an upper limit of the out-of-plane spin interaction of J⊥ < 0.25 meV.

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