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- W2022846985 abstract "Recent neutron scattering experiments have revealed that the generic form of the magnetic excitations in the high-Tc cuprates has the so-called hourglass shape; it features both upward and downward excitations at the incommensurate (IC) momenta merging to the resonance peak at the commensurate momentum (π,π). We propose the two-component spin-fermion model as a minimal phenomenological model which has both local spins and itinerant fermions as independent degrees of freedom. Our calculations of the dynamic spin correlation function provide good agreement with experiments and show: (1) the upward dispersion branch of magnetic excitations is mostly due to the local spin excitations; (2) the downward dispersion branch is from collective spin excitations of fermions; (3) the resonance mode is a mixture of both degrees of freedom." @default.
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- W2022846985 date "2009-03-01" @default.
- W2022846985 modified "2023-09-24" @default.
- W2022846985 title "Theory of magnetic excitations in high-Tccuprates: Two component spin-fermion model" @default.
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- W2022846985 doi "https://doi.org/10.1088/1742-6596/150/5/052013" @default.
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