Magnon excitation by spin injection in thin Fe/Cr/Fe films

被引：41

作者：

Rezende, SM ^{[1
]}

de Aguiar, FM ^{[1
]}

Lucena, MA ^{[1
]}

Azevedo, A ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.84.4212

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The technique of Brillouin light scattering is used to observe strong excitation of magnons in antiferromagnetically coupled trilayers of Fe/Cr/Fe at room temperature. The magnons are driven out of equilibrium by a microwave current applied in the trilayer through point contacts. The magnitude of the scattering intensity is investigated as a function of the magnon wave number and applied magnetic field. Confirming recent theoretical predictions, the observations provide strong evidence of electronic spin injection in the rf driving field.

引用

页码：4212 / 4215

页数：4

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