Abstract
At low temperatures, the spin-spin relaxation mechanism in PrCl 3 is caused by the fluctuating electric-field gradients due to the transverse Pr moments. In this paper, a finite-chain calculation for the transverse autocorrelation function S xx(q,ω) has been performed and evaluated in the temperature range kT/J < 4. Qualitative agreement is found for the temperature dependence of the spin-spin relaxation time, and an explanation is proposed for the deviations observed.
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