Momentum-dependent light scattering in insulating cuprates | Zendy

F. Vernay | Zendy; Michel J. P. Gingras | Zendy; Thomas Devereaux | Zendy

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Momentum-dependent light scattering in insulating cuprates

Author(s) -

F. Vernay,

Michel J. P. Gingras,

Thomas Devereaux

Publication year - 2007

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.75.020403

Subject(s) - physics , magnon , cuprate , scattering , antiferromagnetism , condensed matter physics , inelastic scattering , square lattice , inelastic neutron scattering , mott scattering , spin wave , quantum mechanics , momentum (technical analysis) , neutron scattering , superconductivity , small angle neutron scattering , ferromagnetism , finance , ising model , economics

We investigate the problem of inelastic x-ray scattering in the spin$-{1/2}$Heisenberg model on the square lattice. We first derive a momentum dependentscattering operator for the $A_{1g}$ and $B_{1g}$ polarization geometries. Onthe basis of a spin-wave analysis, including magnon-magnon interactions andexact-diagonalizations, we determine the qualitative shape of the spectra. Weargue that our results may be relevant to help interpret inelastic x-rayscattering experiments in the antiferromagnetic phase of the cuprates.Comment: 5 pages, 3 figures, to appear in PR

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