Denis Rancourt
DG Rancourt
Solid State Communications
Volume 58, Issue 7, May 1986, Pages 433-440
https://doi.org/10.1016/0038-1098(86)90026-8
Abstract
We calculate the soliton bound lattice defect (SBLD) which arises in an Ising chain when the non-ideal rigidity of the lattice is admitted and its major consequences. Our results are (i) a correction to the soliton energy which can be 10% or larger, (ii) a positive interaction energy which falls off exponentially with soliton separation, and (iii) the existence of an energy barrier, Eb, which a moving soliton sees at each step in its progression and which can be as large as the soliton energy itself or larger. Our calculations suggest that the existence of Eb leads to diffusive propagation and a spin dynamics which agrees with recent measurements. In higher dimensions, the corresponding spin-pair bound lattice defect is a plausible mechanism for the thermoremanent magnetization of spin glasses and for the recently observed “waiting- time effect” in amorphous alloy spin glasses.
