Magnetic Order and Dynamics in Stripe-Ordered La2-xSrxNiO4

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

doi:10.1016/j.physb.2003.11.007

Magnetic Order and Dynamics in Stripe-Ordered La2-xSrxNiO4

Strongly Correlated Electrons 2009-11-10 v1

Authors: 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.

Keywords

polarized neutron scattering magnetic order spin dynamics anisotropy gap spin-charge coupling

Cite

@article{arxiv.cond-mat/0308631,
  title  = {Magnetic Order and Dynamics in Stripe-Ordered La2-xSrxNiO4},
  author = {A. T. Boothroyd and P. G. Freeman and D. Prabhakaran and M. Enderle and J. Kulda},
  journal= {arXiv preprint arXiv:cond-mat/0308631},
  year   = {2009}
}

Comments

4 pages, 3 figs. Presented at PNSXM, Venice. To appear in Physica B

Magnetic Order and Dynamics in Stripe-Ordered La2-xSrxNiO4

Abstract

Keywords

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