Abstract
The switching and threshold properties of quasi-one-dimensionalcharge-density-wave conductor rubidium blue bronzeRb0.3MoO3 single crystals are investigated in acomparative high and large temperature range. Beyond the limittemperature 50 K of Littlewood's theory, even up to about 100 K, typicalsharp switching to negative or zero differential resistance is observedin E–I characteristic curves. Correspondingly, an obvious switchingbetween two conducting states, from a lowly conducting state to ahighly conducting state, is observed in the I–E characteristiccurves in the same temperature range. Temperature dependence of thesecond threshold field ET2 accompanied by this kind of highfield switching behaviour is firstly obtained. These new observationsare discussed in the mechanism of the current inhomogeneity andredistribution due to the existence of transverse energy barrierssuggested by Zhang et al. [Solid State Commun. 85 (1993) 121]
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