Abstract
A recent analysis of optical conductivity data which has provided evidence for coupling of the charge carriers to the 41-meV spin resonance seen in the superconducting state of optimally doped (Y123) is extended to other systems. We find that the corresponding spin resonance is considerably broader in (Tl2201) and (Y124) than it is in (Bi2212) and there is no resonance in overdoped Tl2201 with The effective charge-spin spectral density is temperature dependent and contains feedback effects that further stabilize superconductivity as T is reduced.
- Received 12 June 2000
DOI:https://doi.org/10.1103/PhysRevB.62.9054
©2000 American Physical Society