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Lee, Ki-Suk
Creative Lab. for Advanced Spin Systems (CLASS)
Research Interests
  • Magnetism, spintronics, spin dynamics, rare-earth free magnet

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Observation of coupled vortex gyrations by 70-ps-time- and 20-nm-space-resolved full-field magnetic transmission soft x-ray microscopy

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Title
Observation of coupled vortex gyrations by 70-ps-time- and 20-nm-space-resolved full-field magnetic transmission soft x-ray microscopy
Author
Jung, HyunsungYu, Young-SangLee, Ki-SukIm, Mi-YoungFischer, PeterBocklage, LarsVogel, AndreasBolte, MarkusMeier, GuidoKim, Sang-Koog
Keywords
Coupled vortices; Direct method; Full-field; Magnetic transmissions; Soft x-ray microscopy; Spatial resolution
Issue Date
2010-11
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.97, no.22, pp.1 - 3
Abstract
We employed time- and space-resolved full-field magnetic transmission soft x-ray microscopy to observe vortex-core gyrations in a pair of dipolar-coupled vortex-state Permalloy (Ni80 Fe20) disks. The 70 ps temporal and 20 nm spatial resolution of the microscope enabled us to simultaneously measure vortex gyrations in both disks and to resolve the phases and amplitudes of both vortex-core positions. We observed their correlation for a specific vortex-state configuration. This work provides a robust and direct method of studying vortex gyrations in dipolar-coupled vortex oscillators.
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DOI
10.1063/1.3517496
ISSN
0003-6951
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MSE_Journal Papers
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