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

Journal Article · Mon Nov 29 00:00:00 EST 2010 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3517496· OSTI ID:21518192

Jung, Hyunsung; Yu, Young-Sang; Lee, Ki-Suk; Kim, Sang-Koog ^[1]; Im, Mi-Young; Fischer, Peter ^[2]; Bocklage, Lars; Vogel, Andreas; Bolte, Markus; Meier, Guido ^[3]

---

1. Research Center for Spin Dynamics and Spin-Wave Devices, and Nanospinics Laboratory, Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)
2. Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
3. Institut fuer Angewandte Physik und Zentrum fuer Mikrostrukturforschung, Universitaet Hamburg, Hamburg 20355 (Germany)

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 (Ni{sub 80}Fe{sub 20}) 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.

• OSTI ID: 21518192
• Journal Information: Applied Physics Letters, Vol. 97, Issue 22; Other Information: DOI: 10.1063/1.3517496; (c) 2010 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLITUDES
CONFIGURATION
CORRELATIONS
IRON ALLOYS
MAGNETIC CORES
MAGNETIC FIELDS
MAGNETIC MOMENTS
MICROSCOPES
MICROSCOPY
NICKEL ALLOYS
OSCILLATORS
PERMALLOY
SOFT X RADIATION
SPATIAL RESOLUTION
TRANSMISSION
VORTICES
ALLOYS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
IONIZING RADIATIONS
MAGNETIC STORAGE DEVICES
MEMORY DEVICES
RADIATIONS
RESOLUTION
TRANSITION ELEMENT ALLOYS
X RADIATION