Effect of spin-polarized injection on the mixed state of YBa2Cu3O7-δ

被引：23

作者：

Mikheenko, P ^{[1
]}

Colclough, MS ^{[1
]}

Severac, C ^{[1
]}

Chakalov, R ^{[1
]}

Welhoffer, F ^{[1
]}

Muirhead, CM ^{[1
]}

机构：

[1] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 03期

关键词：

D O I：

10.1063/1.1341229

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report measurements of the magnetic moment of YBa2Cu3O7-delta films when subjected to injection of short pulses of spin-polarized current from the colossal magnetoresistance (CMR) manganites La0.7Ca0.3MnO3 and La0.7Sr0.3MnO3, and unpolarized current from the nonmagnetic perovskite LaNiO3(LNO). We study relaxation from the Bean critical state, with and without current pulses. For pulses longer than 100 ms, the effect of injection is similar for all samples and is due to heating. Below 1 ms, we see a clear difference between the CMR and LNO samples and attribute this to the spin polarization of the current injected from the CMR materials. (C) 2001 American Institute of Physics.

引用

页码：356 / 358

页数：3

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