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
收藏
页码：L1583 / L1586
页数：4
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