Neutron Scattering and Superconducting Order Parameter in YBa2Cu3O7
I. I. Mazin, Victor M. Yakovenko
DOI 10.1103/PhysRevLett.75.4134 · Physical Review Letters
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Abstract
We discuss the origin of the neutron scattering peak at 41 meV observed in YBa2Cu3O7 below Tc. The peak may occur due to spin-flip electron excitations across the superconducting gap which are enhanced by the antiferromagnetic interaction between Cu spins. In this picture, the experiment is most naturally explained if the superconducting order parameter has s-wave symmetry and opposite signs in the bonding and antibonding electron bands formed within a Cu2O4 bilayer.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
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