Spin waves and electronic interactions in La2CuO4.

  title={Spin waves and electronic interactions in La2CuO4.},
  author={R. Coldea and S. Hayden and G. Aeppli and T. Perring and C. Frost and T. E. Mason and S. Cheong and Z. Fisk},
  journal={Physical review letters},
  volume={86 23},
  • R. Coldea, S. Hayden, +5 authors Z. Fisk
  • Published 2001
  • Physics, Medicine
  • Physical review letters
  • The magnetic excitations of the square-lattice spin-1/2 antiferromagnet and high- T(c) parent compound La2CuO4 are determined using high-resolution inelastic neutron scattering. Sharp spin waves with absolute intensities in agreement with theory including quantum corrections are found throughout the Brillouin zone. The observed dispersion relation shows evidence for substantial interactions beyond the nearest-neighbor Heisenberg term which can be understood in terms of a cyclic or ring exchange… CONTINUE READING
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