Abstract
The results of magnetic susceptibility (χ) measurements from 4 K to 430 K are reported for the quasi one-dimensional (1-D) conductor (TaSe4)2I. The long range charge density wave (CDW) transition at Tc = 265 K is manifested in the data via a small (20%) slope change in χ(T). By comparison with the 1973 theoretical prediction of Lee, Rice and Anderson for χ(T) of isolated 1-D chains, CDW amplitude fluctuations are found to be responsible for the strong continuing increase of χ observed above Tc. Comparison with χ(T) previously reported for the quasi 1-D conductors o-TaS3 and K0.3MoO3 reveals the universal behavior of χ(T) above Tc for these compounds.
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