Critical current control in a superconducting thin film with a ferromagnetic layer

被引：2

作者：

Allsworth, MD ^{[1
]}

Chakalov, RA ^{[1
]}

Mikheenko, R ^{[1
]}

Colclough, MS ^{[1
]}

Muirhead, CM ^{[1
]}

机构：

[1] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2003年 / 13卷 / 02期

关键词：

magnetic materials; superconducting devices;

D O I：

10.1109/TASC.2003.812035

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report suppression of the critical current of thin film Yba(2)Cu(3)O(7) layers by altering the magnetization of a ferromagnetic La0.67Ca0.33MnO3 overlayer. We provide evidence that the critical current suppression is related to the spin-polarized state of the magnetic layer, rather than a direct magnetic influence. We argue that the spin diffusion length in the superconducting layer is small compared with the typical domain size in the ferromagnetic layer in its demagnetized state.

引用

页码：2849 / 2852

页数：4

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