Spin-wave wells with multiple states created in small magnetic elements

Bayer, C.; Demokritov, S. O.; Hillebrands, B.; Slavin, A. N.
January 2003
Applied Physics Letters;1/27/2003, Vol. 82 Issue 4, p607
Academic Journal
We have observed several localized modes in the spin-wave spectrum of a permalloy microstripe (length 90 µm, width 1 µm, thickness 0.033 µm) magnetized along its width. The mode frequencies increase from 4.5 to 8 GHz with increasing applied field (0-1.1 kOe). These modes are interpreted as multiple spin-wave eigenstates in effective potential wells created by a strongly inhomogeneous internal magnetic field in the stripe near its edges.


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