Abstract
Results are presented for the low-temperature specific heat of a disordered Heisenberg chain with random $\ifmmode\pm\else\textpm\fi{}J$ interactions in the large-spin limit. The specific heat varies at ${T}^{2/3}$ with a coefficient that depends on the relative fractions of positive and negative bonds. The coefficient is calculated exactly for the equal-probability distribution. There is also a brief analysis of the destabilizing effects of an applied magnetic field.
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