Phys. Rev. Lett. 75, 4134–4137 (1995)Neutron Scattering and Superconducting Order Parameter in YBa2Cu3O7See Also: Erratum Received 1 March 1995; published in the issue dated 27 November 1995 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. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.75.4134
DOI:
10.1103/PhysRevLett.75.4134
PACS:
74.72.Bk, 61.12.Bt, 74.20.Mn
See AlsoErratum: I. I. Mazin and Victor M. Yakovenko, Neutron Scattering and Superconducting Order Parameter in YBa2Cu3O7, Phys. Rev. Lett. 76, 1984 (1996). |
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