ESR Due to Propagating Domain Walls in One-Dimensional Ising-Like Antiferromagnets

Abstract

A theory is presented on the ESR due to spins at thermally activated domain walls in antiferromagnetic Ising-like chains. Several features of the resonance are pointed out, including a notable asymmetric line shape for the magnetic field tilted from the Ising axis. A study is made also on the effect of interchain molecular field on the temperature dependence of intensity.