TRANSPORT-PROPERTIES OF ZINC-DOPED YBA2CU3O7-DELTA THIN-FILMS

被引：81

作者：

WALKER, DJC

MACKENZIE, AP

COOPER, JR

机构：

[1] Interdisciplinary Research Centre in Superconductivity, University of Cambridge, Cambridge CB3 OHE, Madingley Road

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.51.15653

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. © 1995 The American Physical Society.

引用

页码：15653 / 15656

页数：4

共 27 条

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