Zn-induced {ital T}{sub {ital c}} Reduction in High-{ital T}{sub {ital c}} Superconductors: Scattering in the Presence of a Pseudogap

Journal Article · Sun Nov 30 23:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.5294· OSTI ID:554427

Tallon, J L; Williams, G V ^[1]; Bernhard, C ^[2]; Loram, J W ^[3]

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1. New Zealand Institute for Industrial Research, P.O. Box 31310, Lower Hutt (New Zealand)
2. Max Planck Institut fuer Festkoerperforschung, D-70506 Stuttgart (Germany)
3. IRC in Superconductivity, Cambridge University, Cambridge CB3 0HE (United Kingdom)

The depression of T{sub c} with fraction y of Zn substitution is studied across the underdoped and overdoped regions in La-214 and (Y,Ca)-123. The overdoped region is well described by elastic scattering at the unitarity limit with a d -wave strong-coupling superconducting order parameter. The underdoped region shows a marked increase in dT{sub c}/dy , consistent with unitary scattering in the presence of an anisotropic normal-state pseudogap which depletes the density of states about E{sub F} . {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 554427
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 26 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
BARIUM OXIDES
COPPER OXIDES
CRYSTAL DOPING
D WAVES
ELASTIC SCATTERING
ENERGY GAP
HIGH-TC SUPERCONDUCTORS
ORDER PARAMETERS
TRANSITION TEMPERATURE
YTTRIUM OXIDES
ZINC ADDITIONS