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Rods of Neutron Scattering Intensity in Yb2Ti2O7: Compelling Evidence for Significant Anisotropic Exchange in a Magnetic Pyrochlore Oxide
Jordan D. Thompson, Paul A. McClarty, Henrik M. Ronnow +3
Paramagnetic correlations in the magnetic material Yb2Ti2O7 have been investigated via neutron scattering, revealing a [111] rod of scattering intensity. Assuming interactions betw…
Low energy theory of the t-t'-t''-U Hubbard Model at half-filling: interaction strengths in cuprate superconductors and an effective spin-only description of La_2CuO_4
J. -Y. P. Delannoy, M. J. P. Gingras, P. C. W. Holdsworth +1
Spin-only descriptions of the half-filled one-band Hubbard model are relevant for a wide range of Mott insulators. In addition to the usual Heisenberg exchange, many new types of i…
Momentum dependent light scattering in insulating cuprates
F. H. Vernay, M. J. P. Gingras, T. P. Devereaux
We investigate the problem of inelastic x-ray scattering in the spin Heisenberg model on the square lattice. We first derive a momentum dependent scattering operator for th…