Contribution of the domain walls to the low-temperature thermodynamics of a one-dimensional ferromagnet
М. М. БогданPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovA. S. KovalevPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov
ABI
Abstract
Nonlinear domain-wall dynamics is investigated in terms of many-soliton collisions within the framework of the exactly soluble one-dimensional Landau–Lifshitz equation for an orthorhombic ferromagnet. The change in the density of magnon states in the presence of domain walls is found from the data on magnon-drop scattering by a domain wall, and the contribution of domain walls to classical low-temperature phenomenological thermodynamics is computed.
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