Abstract
Using micromagnetic simulation, we investigate the effect of enhanced damping induced by spin-motive force on the vortex dynamics. It is found that the enhanced damping does not affect the resonance frequency of gyrotropic motion. However, it changes the gyration radius, the velocity of a vortex core, and the dynamics of core reversal. During the gyrotropic motion, the additional damping goes up to three times larger than a typical value of the intrinsic damping. Moreover, in the case of core reversal, the additional damping becomes 10 times larger than the intrinsic damping. For vortex dynamics, the enhanced damping due to spin-motive is non-negligible and thus should be considered to understand experimental results.
| Original language | English |
|---|---|
| Article number | 07D120 |
| Journal | Journal of Applied Physics |
| Volume | 111 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2012 Apr 1 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Effect of enhanced damping caused by spin-motive force on vortex dynamics. / Moon, Jung Hwan; Lee, Kyoung Jin.
In: Journal of Applied Physics, Vol. 111, No. 7, 07D120, 01.04.2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of enhanced damping caused by spin-motive force on vortex dynamics
AU - Moon, Jung Hwan
AU - Lee, Kyoung Jin
PY - 2012/4/1
Y1 - 2012/4/1
N2 - Using micromagnetic simulation, we investigate the effect of enhanced damping induced by spin-motive force on the vortex dynamics. It is found that the enhanced damping does not affect the resonance frequency of gyrotropic motion. However, it changes the gyration radius, the velocity of a vortex core, and the dynamics of core reversal. During the gyrotropic motion, the additional damping goes up to three times larger than a typical value of the intrinsic damping. Moreover, in the case of core reversal, the additional damping becomes 10 times larger than the intrinsic damping. For vortex dynamics, the enhanced damping due to spin-motive is non-negligible and thus should be considered to understand experimental results.
AB - Using micromagnetic simulation, we investigate the effect of enhanced damping induced by spin-motive force on the vortex dynamics. It is found that the enhanced damping does not affect the resonance frequency of gyrotropic motion. However, it changes the gyration radius, the velocity of a vortex core, and the dynamics of core reversal. During the gyrotropic motion, the additional damping goes up to three times larger than a typical value of the intrinsic damping. Moreover, in the case of core reversal, the additional damping becomes 10 times larger than the intrinsic damping. For vortex dynamics, the enhanced damping due to spin-motive is non-negligible and thus should be considered to understand experimental results.
UR - http://www.scopus.com/inward/record.url?scp=84861731983&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84861731983&partnerID=8YFLogxK
U2 - 10.1063/1.3676050
DO - 10.1063/1.3676050
M3 - Article
AN - SCOPUS:84861731983
VL - 111
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 7
M1 - 07D120
ER -