Incommensurate magnetic correlations in <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">La</mi></mrow><mrow><mn>1.8</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Sr</mi></mrow><mrow><mn>0.2</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">NiO</mi></mrow><mrow><mn>4</mn></mrow></msub></mrow></math>

S. M. Hayden; G. H. Lander; J. Zarestky; P. J. Brown; C. Stassis; P. Metcalf; J. M. Honig

doi:10.1103/PhysRevLett.68.1061

Incommensurate magnetic correlations in ${La}_{1.8}$ ${Sr}_{0.2}$ ${NiO}_{4}$

S. M. Hayden, G. H. Lander, J. Zarestky, P. J. Brown, C. Stassis, P. Metcalf, and J. M. Honig

Phys. Rev. Lett. 68, 1061 – Published 17 February 1992

Abstract

Neutron scattering experiments on an insulating single crystal of ${La}_{1.8}$ ${Sr}_{0.2}$ ${NiO}_{4}$ show the presence of strong two-dimensional incommensurate magnetic correlations in the ${NiO}_{2}$ planes. At low temperatures, T=2 K, these exist on time scales τ> $10^{- 11}$ s. The typical side length of the correlated regions in the direction parallel to the incommensurate modulation is equal to the average spacing between strontium atoms.

Received 17 June 1991

DOI:https://doi.org/10.1103/PhysRevLett.68.1061

Authors & Affiliations

S. M. Hayden, G. H. Lander, J. Zarestky, P. J. Brown, C. Stassis, P. Metcalf, and J. M. Honig

H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, United Kingdom
Commission of the European Communities, Joint Research Centre, Postfach 2340, D-7500 Karlsruhe, Germany
Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa 50011
Institut Laue-Langevin, Boîte Postale 156X, 38042 Grenoble, France
Department of Chemistry, Purdue University, West Lafayette, Indiana 47907