A. Wahl et al., MAGNETIC STUDY OF AN OVERDOPED 1223 SYSTEM - TLBA0.8SR1.2CA2CU3O9-DELTA SINGLE-CRYSTALS, Physica. C, Superconductivity, 244(3-4), 1995, pp. 341-348
The influence of the doping state upon the magnetic properties of over
doped superconducting TlBa0.8Sr1.2Ca2Cu3O(9-delta) Single crystals has
been investigated. The temperature dependence of the in-plane London
penetration depth, of the irreversibility line and of the so-called fi
shtail effect for different annealing treatments in Ar-H-2 and in oxyg
en pressure is fundamentally different from that observed for other ov
erdoped cuprates and especially from thallium bilayer cuprates. This r
emarkable difference of behavior between thallium monolayer and bilaye
r overdoped cuprates is interpreted in terms of crystallographic struc
ture and hole-reservoir effects.