Magnetic dynamics of superconducting La1.86Sr0.14CuO4
T. E. Mason, G. Aeppli, H. A. Mook
DOI 10.1103/PhysRevLett.68.1414 · Physical Review Letters
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Abstract
The general magnetic response function χ(Q,ω) of a superconducting (Tc=33 K) single crystal of La1.86Sr0.14CuO4 is measured using inelastic neutron scattering. There is no gap in the magnetic fluctuation spectrum of the normal state. Superconductivity reduces χ’’(Q,ω) in progressively greater proportion as ħω decreases below 6 meV. The superconducting transition coincides with a sharp maximum in the temperature-dependent χ’’(Q,ω) for ħω=4 meV and Q fixed at the incommensurate wave vector characterizing the magnetic fluctuations in the normal state.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.86Sr0.14CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 33 | Pressure not reported | onset |
| La1.86Sr0.14CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 33 | Pressure not reported | unknown |
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