  Broadband magnetization response of equilateral triangular 1000 nm Permalloy
dots has been studied under an in-plane magnetic field, applied parallel
(buckle state) and perpendicular (Y state) to the triangles base. Micromagnetic
simulations identify edge spin waves (E-SWs) in the buckle state as SWs
propagating along the two adjacent edges. These quasi one-dimensional spin
waves emitted by the vertex magnetic charges gradually transform from
propagating to standing due to interference and are weakly affected by dipolar
interdot interaction and variation of the aspect ratio. Spin waves in the Y
state have a two dimensional character. These findings open perspectives for
implementation of the E-SWs in magnonic crystals and thin films.
