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The one-dimensionalization of three-dimensional organic chain conductors by impurities

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The effect of impurities on the phase transition caused by weak electron-electron interactions in a 3D array of linear conducting chains is considered. Inasmuch as the impurities destroy the correlations between electrons on different chains, they suppress the 3D phase transition and enhance the superconductive fluctuations on single chains, leading to a sort of “precursor” temperature behavior above the 3D phase transition temperature. The possibility of the observation of this effect in real materials is discussed, and arguments are given showing that this phenomenon could be responsible for the unusual properties of the nonstoichiometric compound (TTT)2I+;δ.

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This work was performed at the Aspen Center for Physics while the authors were participants in the joint US-USSR research group in the theory of condensed matter, which was supported by a National Science Foundation grant.

Supported in part by NSF grant DMR 76-23330 AO1.

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Abrahams, E., Gor'kov, L.P. & Kharadze, G.A. The one-dimensionalization of three-dimensional organic chain conductors by impurities. J Low Temp Phys 32, 673–688 (1978). https://doi.org/10.1007/BF00056652

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  • DOI: https://doi.org/10.1007/BF00056652

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