Abstract
Inelastic neutron-scattering measurements of single--layer reveal an antiferromagnetic resonance with energy below the superconducting transition temperature . The resonance is energy-resolution limited and exhibits an intrinsic momentum width of about , consistent with prior work on several other cuprates. The rather large value of is identical to the characteristic energy of the electron-boson spectral density obtained from recent optical conductivity work, consistent with the notion that the charge carriers are strongly coupled to magnetic fluctuations.
- Received 8 September 2009
DOI:https://doi.org/10.1103/PhysRevB.81.064518
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