Enhanced Gilber damping in thin ferromagnetic films

被引：1636

作者：

Tserkovnyak, Y ^{[1
]}

Brataas, A

Bauer, GEW

机构：

[1] Harvard Univ, Lyman Lab Phys, Cambridge, MA 02138 USA

[2] Delft Univ Technol, Dept Appl Phys, NL-2628 CJ Delft, Netherlands

[3] Delft Univ Technol, DIMES, NL-2628 CJ Delft, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.88.117601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The precession of the magnetization of a ferromagnet is shown to transfer spins into adjacent normal metal layers. This pumping of spins slows down the precession corresponding to an enhanced Gilbert damping constant in the Landau-Lifshitz equation. The damping is expressed in terms of the scattering matrix of the ferromagnetic layer, which is accessible to model and fist-principles calculations. Our estimates for permalloy thin films explain the trends observed in recent experiments.

引用

页码：4 / 117601

页数：4

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