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

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

2006-09-05

arxiv.org/abs/cond-mat/0609089v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.97.216603

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 d.c. 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 d.c. voltage.

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