Current-induced spin-wave excitations in a single ferromagnetic layer
Preprint
- 5 October 2002
Abstract
A new current induced spin-torque transfer effect has been observed in a single ferromagnetic layer without resorting to multilayers. At a specific current density of one polarity injected from a point contact, abrupt resistance changes due to current-induced spin wave excitations have been observed. The critical current at the onset of spin-wave excitations depends linearly on the external field applied perpendicular to the layer. The observed effect is due to current-driven heterogeneity in an otherwise uniform ferromagnetic layer.Keywords
All Related Versions
- Version 1, 2002-10-05, ArXiv
- Published version: Physical Review Letters, 90 (10), 106601.
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