We studied the Tc-suppression by Cu-site substitution in Bi2SrcCa1-xYx(Cu1-xMx)2O8+δ (Bi-2212) with M-Fe,Co,Ni,Zn and in Bi2Sr1.6La0.4Cu1-zM=O6+δ (Bi-2201) with M=Co,Zn under variation of the hole concentration p. We found a distinct behaviour between the underdoped and overdoped side of the Tc-p phase diagram. Only in the overdoped regime, Tc is scaling as Tc (p, z)-Tc (p,0)g(z) with a p-independent scaling function g(z). We demonstrate the universality of this distinction in p-type high-Tc cuprates by comparison with publications on the La-214 and Y-123 systems and apply the scaling law to compare Bi2Sr2-Ca(Cu1-xCox)2O8+δ with the intercalation compound IBi2Sr2Ca(Cu1-xCox)2O8+δ- The results are discussed from the viewpoint of Abrikosov pair breaking, localization and phase fluctuations.
ASJC Scopus subject areas
- Physics and Astronomy(all)