Driven dynamic mode-splitting of the magnetic vortex translational resonance.
Journal Article
·
· Phys. Rev. Lett.
A magnetic vortex in a restricted geometry possesses a nondegenerate translational excitation that corresponds to circular motion of its core at a characteristic frequency. For 40-nm thick, micron-sized permalloy elements, we find that the translational-mode microwave absorption peak splits into two peaks that differ in frequency by up to 25% as the driving field is increased. An analysis of micromagnetic equations shows that for large driving fields two stable solutions emerge.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- NSERC Canada (Fellowship)
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1000186
- Report Number(s):
- ANL/CNM/JA-59069
- Journal Information:
- Phys. Rev. Lett., Journal Name: Phys. Rev. Lett. Journal Issue: Dec. 31, 2007 Vol. 99; ISSN 1079-7114; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- ENGLISH
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