Abstract
We show that magnetization reversal in spin-injection devices can be significantly faster when using a chirped rf current, rather than a dc, pulse. Although one can use a simple sinusoidal rf pulse, an optimized series of alternating, equal-amplitude, pulses of varying width (a digitized approximation to a chirped rf pulse) produces more efficient switching.
Original language | English (US) |
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Article number | 192515 |
Journal | Applied Physics Letters |
Volume | 88 |
Issue number | 19 |
DOIs | |
State | Published - 2006 |
Funding
This work was supported by the National Science Foundation under Grant Nos. ESC-02-24210 and DMR 0244711.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)