Superconductivity in (110) PrBa2Cu3O7-delta thin films pseudomorphically grown on (110) YBa2Cu3O7-delta single crystal substrates

被引：54

作者：

Usagawa, T

Ishimaru, Y

Wen, JG

Utagawa, T

Koyama, S

Enomoto, Y

机构：

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1997年 / 36卷 / 12A期

关键词：

superconductivity; stoichiometric PrBa2Cu3O7-delta; pseudomorphic epitaxy; (110) YBa2Cu3O7-delta single crystal substrates;

D O I：

10.1143/JJAP.36.L1583

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on superconductivity in (110) oriented PrBa2Cu3O7-delta films pseudomorphically grown on (110) YBa2Cu3O7-delta (YBCO) single crystal substrates. The vertical 4-probe measurements for (110) PrBa2Cu3O7-delta/YBa2Cu3O7-delta bilayers show clearly two superconducting transition steps associated with two different T-c's of 92.0 K of YBa2Cu3O7-delta, 89.9 K for 30 nm thick PrBa2Cu3O7-delta and 75.5 K for 220 nm thick PrBa2Cu3O7-delta. The non-substitutional ''regular'' Pr1+xBa2-xCu3O7-delta (x = 0.0) without any interchange between Pr atoms and Ba atoms will show superconductivity by the same mechanism with other YBCO families.

引用

页码：L1583 / L1586

页数：4

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