Abstract
We study the velocity versus applied-field relation of a moving Bloch domain wall, using the ‘‘collective-coordinate’’ method employed in the theory of soliton motion. For a sufficiently large field, the wall emits spin waves, thereby self-limiting its velocity. That velocity is equal to the common value of the phase and group velocities of a particular spin wave, and may be above or below the Walker limit , depending on the intrinsic damping.
- Received 14 August 1990
DOI:https://doi.org/10.1103/PhysRevLett.65.2587
©1990 American Physical Society