Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet

被引：248

作者：

Costache, M. V. ^{[1
]}

Sladkov, M. ^{[1
]}

Watts, S. M. ^{[1
]}

van der Wal, C. H. ^{[1
]}

van Wees, B. J. ^{[1
]}

机构：

[1] Univ Groningen, Phys Nanodevices Grp, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.97.216603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report direct electrical detection of spin pumping, using a lateral normal-metal/ferromagnet/normal-metal device, where a single ferromagnet in ferromagnetic resonance pumps spin-polarized electrons into the normal metal, resulting in spin accumulation. The resulting backflow of spin current into the ferromagnet generates a dc voltage due to the spin-dependent conductivities of the ferromagnet. By comparing different contact materials (Al and/or Pt), we find, in agreement with theory, that the spin-related properties of the normal metal dictate the magnitude of the dc voltage.

引用

页数：4

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