Suppression of the Superconducting Condensate in the High-{ital T}{sub {ital c}} Cuprates by Zn Substitution and Overdoping: Evidence for an Unconventional Pairing State
- Universitaet Konstanz, Fakultaet fuer Physik, D-78434 Konstanz (Germany)
By muon spin rotation we studied the depression in condensate density, {ital n}{sub {ital s}} by Zn substitution in underdoped, optimal-doped, and overdoped Y{sub 0.8}Ca{sub 0.2}Ba{sub 2}(Cu{sub 1{minus}{ital y}}Zn{sub {ital y}}){sub 3}O{sub 7{minus}{delta}}. The rapid initial decrease of {ital n}{sub {ital s}} is inconsistent with {ital s}-wave pairing and magnetic scattering but points towards a {ital d}-wave pairing state with nonmagnetic scattering in the unitarity limit irrespective of the doping state. A similar conclusion is inferred from the depression of {ital T}{sub {ital c}} and {ital n}{sub {ital s}} with overdoping in the pure compounds where pair breaking appears to be associated with increasing three dimensionality. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 383869
- Journal Information:
- Physical Review Letters, Vol. 77, Issue 11; Other Information: PBD: Sep 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Zn-induced {ital T}{sub {ital c}} Reduction in High-{ital T}{sub {ital c}} Superconductors: Scattering in the Presence of a Pseudogap
Muon Spin Relaxation Studies of Zn-Substitution Effects in High-{ital T{sub {ital c}}} Cuprate Superconductors