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Magnetic Order and Dynamics in Stripe-Ordered La2-xSrxNiO4

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.
Publication status:
Published

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Publisher copy:
10.1016/j.physb.2003.11.007

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Condensed Matter Physics
Role:
Author
Volume:
345
Issue:
1-4
Pages:
1-5
Publication date:
2003-08-29
DOI:
ISSN:
0921-4526
URN:
uuid:6fc9eeb8-f2f9-4261-80d6-01e2d1d9a044
Source identifiers:
21258
Local pid:
pubs:21258
Keywords:

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