Microscopic derivation of domin walls
- 1 January 1977
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 16 (1) , 183-186
- https://doi.org/10.1080/00150197708237153
Abstract
A variational calculation yields an eigenstate representing a domain wall-type solution for various quantum-mechanical spin models. Heisenberg Hamiltonians with local and exchange anisotropy, and an Ising model in a transverse field (including its critical regime) are discussed in detail. The domain walls are viewed as localized solutions of non-linear equations. The extent to which the results for the transverse field Ising model may be mapped on to a currently interesting “double well” anhurmonic lattice problem are analysed.Keywords
This publication has 6 references indexed in Scilit:
- Nonlinear Evolution Equations—Two and Three DimensionsPhysical Review Letters, 1975
- Dynamics and statistical mechanics of a one-dimensional model Hamiltonian for structural phase transitionsPhysical Review B, 1975
- The soliton: A new concept in applied scienceProceedings of the IEEE, 1973
- Sine-Gordon EquationJournal of Mathematical Physics, 1970
- Collective motions of hydrogen bondsSolid State Communications, 1963
- Bloch Wall Excitation. Application to Nuclear Resonance in a Bloch WallPhysical Review B, 1961