The soliton wavenumber cut-off and the excitation spectrum of the 1-D Heisenberg ferromagnet in the semiclassical continuum approximation
- 30 August 1982
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 15 (24) , L831-L835
- https://doi.org/10.1088/0022-3719/15/24/006
Abstract
The scheme for the semiclassical quantisation of the solitons of the 1-D continuum Heisenberg ferromagnet is examined. A parameter that can be interpreted as the intrinsic wavenumber Q of a classical soliton is identified. The cut-off restriction that Q lies within the first Brillouin zone has to be added to the continuum model if its results are to be consistently interpreted in terms of an underlying spin S lattice model.Keywords
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