Spin dynamics in the antiferromagnetic phase of electron-doped cuprate superconductors
Qingshan Yuan, T. K. Lee, C. S. Ting
DOI 10.1103/PhysRevB.71.134522 · Physical Review B
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Abstract
Based on the t−t′−t″−J model we have calculated the dynamical spin susceptibilities in the antiferromagnetic (AF) phase for electron-doped cuprates, by use of the slave-boson mean-field theory and random phase approximation. Various results for the susceptibilities versus energy and momentum have been shown at different dopings. At low energy, except the collective spin-wave mode around (π,π) and 0, we have primarily observed that resonance peaks will appear around (0.3π,0.7π) and equivalent points with increasing doping, which are due to the single particle-hole excitations between the two AF bands. The peaks are pronounced in the transverse susceptibility but not in the longitudinal one. These features are predicted for neutron scattering measurements.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nd2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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