ESR Study of Quasi-One-Dimensional Ising-Like Antiferromagnet CsCoCl₃

Abstract

Electron spin resonance was measured at 9.40 GHz as a function of temperature in a quasi-one-dimensional Ising-like antiferromagnet CsCoCl 3 . Observed resonance in the partially disordered phase, \(T_{N2} \lesssim T<t_{N1}\) and its neighborhood is interpreted in terms of ESR due to spins at propagating domain walls in one-dimensional Ising-like antiferromagnet. The theory developed by Shiba and the present author gives a more consistent interpretation of the temperature dependence of the absorption intensity and the angular dependences of the resonance field and the linewidth than the existing theories. Discussion is given in connection with spin-cluster resonance.