New Magnetic Coherence Effect in Superconducting La2−xSrxCuO4
T. E. Mason, A. Schröder, G. Aeppli, H. A. Mook, S. M. Hayden
DOI 10.1103/PhysRevLett.77.1604 · Physical Review Letters
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Abstract
We have used inelastic neutron scattering to examine the magnetic fluctuations at intermediate frequencies in the simplest high temperature superconductor, La2−xSrxCuO4. The suppression of the low energy magnetic response in the superconducting state is accompanied by an increase in the response at higher energies. Just above a threshold energy of ∼7meV there is additional scattering present below Tc which is characterized by an extraordinarily long coherence length, in excess of 50Å.
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. | 35 | Pressure not reported | onset |
| YBa2Cu3O7 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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