This title appears in the Scientific Report :
2006
Please use the identifier:
http://hdl.handle.net/2128/7688 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.97.177202 in citations.
Exchange explosions: magnetization dynamics during vortex-antivortex annihilation
Exchange explosions: magnetization dynamics during vortex-antivortex annihilation
A magnetic vortex and an antivortex can annihilate, resulting in a homogeneous magnetization. A detailed description of the magnetization dynamics of such annihilation processes is obtained by micromagnetic simulations based on the Landau-Lifshitz-Gilbert equation. We show that, depending on the rel...
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Personal Name(s): | Hertel, R. |
---|---|
Schneider, C. M. | |
Contributing Institute: |
Elektronische Eigenschaften; IFF-IEE JARA-FIT; JARA-FIT |
Published in: | Physical review letters, 97 (2006) S. 177202 |
Imprint: |
College Park, Md.
APS
2006
|
Physical Description: |
177202 |
DOI: |
10.1103/PhysRevLett.97.177202 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Physical Review Letters
97 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevLett.97.177202 in citations.
A magnetic vortex and an antivortex can annihilate, resulting in a homogeneous magnetization. A detailed description of the magnetization dynamics of such annihilation processes is obtained by micromagnetic simulations based on the Landau-Lifshitz-Gilbert equation. We show that, depending on the relative polarization of the vortex-antivortex pair, the annihilation process is either a continuous transformation of the magnetic structure or it involves the propagation of a micromagnetic singularity (Bloch point) causing a burstlike emission of spin waves. These results provide new insight into a fundamental micromagnetic process that has recently been proposed for a controlled generation of spin waves. |