New Critical Slowing-Down Mechanism Realized in Ferromagnetic Domain-Wall Instabilities
- 4 July 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 51 (1) , 54-56
- https://doi.org/10.1103/physrevlett.51.54
Abstract
Explicit calculations reported here show that in the classical undamped Heisenberg ferromagnet with orthorhombic anisotropy, the critical slowing down accompanying the energetic instability of the static domain walls is not marked (as one would expect) by a localized soft dynamic mode of the wall, but is realized by a new mechanism which here is called "softening of the velocity change." The model-independent character of this behavior of ferromagnetic domain walls is conjectured.Keywords
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