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Journal Article

Transport properties of zinc-doped YBa2Cu3O7-δ thin films

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Walker, D., Mackenzie, A. P., & Cooper, J. (1995). Transport properties of zinc-doped YBa2Cu3O7-δ thin films. Physical Review B, 51(21), 15653-15656. doi:10.1103/PhysRevB.51.15653.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0018-EC7F-C
We report the results of transport measurements on single-crystal YBa2(Cu1-xZnx)3O7-δ thin films grown by laser ablation. Matthiessen’s rule is obeyed as a function of x at optimum doping (δ∼0.05), but is violated in underdoped samples, where there is evidence from the resistivity that zinc fills in the pseudogap that is observed for samples with x=0, δ ≳0.2. As x and δ are increased, Tc drops rapidly, and a superconductor-insulator transition is observed at a sheet resistance of approximately h/(2e)2 per copper-oxygen bilayer, for various different combinations of x and δ.