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- W1984889466 abstract "Spectral properties of spin-wave excitations in the Mott-Hubbard antiferromagnet are studied in the intermediate-coupling regime, wherein extended-range spin couplings are present in the equivalent spin-1/2 Heisenberg model. A systematic expansion in powers of ${mathit{t}}^{2}$/${mathit{U}}^{2}$ is developed for the spin-wave propagator in the random-phase approximation, and its quantitative usefulness is investigated. In two dimensions the spin-wave density of states exhibits a peak structure, resembling the broadening effect of spin-wave damping. Implications for recent light-pair scattering experiments in ${mathrm{La}}_{2}$${mathrm{CuO}}_{4}$ wherein the complete spin-wave spectrum is accessible in principle, are discussed." @default.
- W1984889466 created "2016-06-24" @default.
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- W1984889466 date "1993-09-01" @default.
- W1984889466 modified "2023-09-27" @default.
- W1984889466 title "Spin-wave spectral properties of the Mott-Hubbard antiferromagnet: The intermediate-coupling regime" @default.
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- W1984889466 doi "https://doi.org/10.1103/physrevb.48.6668" @default.
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