Thermal spin-wave scattering in hot-electron magnetotransport across a spin valve

被引：36

作者：

Jansen, R ^{[1
]}

Kumar, PSA ^{[1
]}

van't Erve, OMJ ^{[1
]}

Vlutters, R ^{[1
]}

de Haan, P ^{[1
]}

Lodder, JC ^{[1
]}

机构：

[1] Univ Twente, MESA Res Inst, Informat Storage Technol Grp, NL-7500 AE Enschede, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.85.3277

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The role of thermal scattering in spin-dependent transport of hot electrons at 0.9 eV is studied using a spin-valve transistor with a soft Ni80Fe20/Au/Co base. Spin-dependent scattering makes the collected electron current depend sensitively on the magnetic state of the base. The magnetocurrent reaches 560% at 100 K, decays with increasing temperature, and a huge effect of 350% still remains at room temperature. The results demonstrate that thermal spin waves produce quasielastic spin-flip scattering of hot electrons, resulting in mixing of the two spin channels.

引用

页码：3277 / 3280

页数：4

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