Abstract
and (Néel) have been measured for a series of ( samples. The T variations of the homogeneous susceptibility of the planes, given by the shift of the NMR line, are found to be nearly unchanged with respect to pure samples for x>0.5, which implies that the charge transfer is negligibly modified by Zn, and that the magentic pseudo-gap is not associated with superconducting pairing. Detection of an unusual Curie contribution to the NMR width for x≥0.5 provides evidence that Zn induces magnetic moments in the planes, which play a role in the depression of .
- Received 8 August 1991
DOI:https://doi.org/10.1103/PhysRevLett.67.3140
©1991 American Physical Society