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Oscillatory domain wall velocity of current-induced domain wall motion

2006; Elsevier BV; Volume: 310; Issue: 2 Linguagem: Inglês

10.1016/j.jmmm.2006.10.943

1873-4766

Wonjoon Kim, Soo-Man Seo, T.D. Lee, Kyung‐Jin Lee,

ZnO doping and properties

We studied the effect of Oersted field (HOe) on current-induced domain wall motion (CIDWM) in magnetic nanowires. We found that HOe generates spin waves. Because of interaction between domain wall (DW) and spin wave, time-dependent wall velocity is oscillatory at the early stage of wall motion. The period of the oscillatory DW motion is in antiphase with the period of out-of-plane (OOP) magnetization oscillation inside the DW. The oscillatory wall velocity is suppressed as the thickness of nanowire decreases because of strong demagnetization field.