Spin and charge dynamics ruled by antiferromagnetic order in iron pnictide superconductors
E. Kaneshita, T. Tohyama
DOI 10.1103/PhysRevB.82.094441 · Physical Review B
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Abstract
We examine the spin and charge excitations in antiferromagnetic iron pnictides by mean-field calculations with a random-phase approximation in a five-band itinerant model. The calculated excitation spectra reproduce well spin-wave dispersions observed in inelastic neutron scattering with a realistic magnetic moment for CaFe2As2. A particle-hole gap is found to be crucial to obtain consistent results; we predict the spin wave in LaFeAsO disappears at a lower energy than in CaFe2As2. We analyze that the charge dynamics to make predictions for resonant inelastic x-ray scattering spectra.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| LaFeAsO1-xFx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 50 | Pressure not reported | unknown |
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