Spin correlations among the charge carriers in an ordered stripe phase

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

doi:10.1103/PhysRevLett.91.257201

Spin correlations among the charge carriers in an ordered stripe phase

Strongly Correlated Electrons 2009-11-10 v1 Superconductivity

Authors: A. T. Boothroyd , P. G. Freeman , D. Prabhakaran , A. Hiess , M. Enderle , J. Kulda , F. Altorfer

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Abstract

We have observed a diffuse component to the low-energy magnetic excitation spectrum of stripe-ordered La5/3Sr1/3NiO4 probed by neutron inelastic scattering. The diffuse scattering forms a square pattern with sides parallel and perpendicular to the stripe directions. The signal is dispersive, with a maximum energy of ~10 meV. Probed at 2 meV the scattering decreases in strength with increasing temperature, and is barely visible at 100 K. We argue that the signal originates from dynamic, quasi- one-dimensional, antiferromagnetic correlations among the stripe electrons.

Keywords

stripe order spin correlations neutron scattering magnetic excitations antiferromagnetic correlations

Cite

@article{arxiv.cond-mat/0310631,
  title  = {Spin correlations among the charge carriers in an ordered stripe phase},
  author = {A. T. Boothroyd and P. G. Freeman and D. Prabhakaran and A. Hiess and M. Enderle and J. Kulda and F. Altorfer},
  journal= {arXiv preprint arXiv:cond-mat/0310631},
  year   = {2009}
}

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4 pages, 4 figures. To be published in Physical Review Letters

Spin correlations among the charge carriers in an ordered stripe phase

Abstract

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