Abstract
The suppression by Cu-site substitution has been studied in a wide range of carrier concentrations p, from the underdoped regime to the overdoped regime, using sintered polycrystals of ( with x=0 and x=0.3 and under variation of δ. The carrier-dependent strength of the suppression by substituting M=Fe, Co, Ni, Zn for Cu is measured. In the overdoped regime, we find scaling as (p,z)/(p,0)=g(z) with a p-independent function g(z), whereas in the underdoped regime (p,z)/(p,0) is strongly p dependent. Replotting data of various publications on the system and comparison with the system demonstrate the universality of this distinction between the two regimes in p-type high- cuprates. The scaling behavior is discussed with respect to Born-limit and unitarity-limit scattering.
- Received 24 February 1995
DOI:https://doi.org/10.1103/PhysRevB.52.R727
©1995 American Physical Society