Abstract
ALTHOUGH it has yet to be finally proven, it now seems clear (ref. 1 and A. J. Heeger, unpublished) that certain organic conductors show indications of the approach of superconductivity at temperatures as high as 58 K. Radical anion salts or charge-transfer complexes of tetracyanoquinodimethane (such as tetrathiofulvalene tetracyanoquinodimethane, abbreviated TTF : TCNQ, structural formula in Fig. 1) are known25 to possess both the necessary'Conducting spine-made up of the TCNQ entities stacked in infinite one-dimensional arrays with interplanar distances of the order of 0.33 nm-and the necessary closely situated “sheath” of highly polarizable molecular groupings (such as TTF) along which, under appropriate circumstances, excitonic exchange could occur. The feasibility of attaining high-temperature superconductivity, a phenomenon which has elicited much recent discussion6 ˜9, is again brought into question.
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References
Coleman, L. B., Cohen, M. J., Sandman, D. J., Garito, A. F., and Heeger, A. J., Solid State Commun., 12, 125 (1973).
Vegter, J. G., thesis, Univ. Groningen (1972).
Vegter, J. G., Hibma, T. J., and Kommandeur, J., Chem. Phys. Lett., 3, 427 (1969).
LeBlanc, jun., O. H., Physics and Chemistry of the Organic Solid State (edit, by Labes, M. M., Fox, D., and Weissberger, A.), 3, 123 (Interscience, 1967).
Kepler, R. G., and Merrifield, R. E., J. Chem. Phys., 40, 1173 (1964).
Little, W. A., Phys. Rev., A134, 1416 (1964).
Epstein, A. J., Etemad, S., Garito, A. F., and Heeger, A. J., Phys. Rev., B5, 952 (1972).
Ginzburg, V. L., and Kirzhnits, D. A., Phys. Rep., 4C, 343 (1972).
Allender, D., Bray, J., and Bardeen, J., Phys. Rev., B7, 1020 (1973).
Thomas, J. M., and Williams, J. O., Molecular Crystals and Liquid Crystals, 9, 59 (1969).
Thomas, J. M., and Williams, J. O., Progr. Solid State Chemistry, 6, 121 (1971).
Williams, J. O., and Thomas, J. M., Molecular Crystals and Liquid Crystals, 16, 223 (1972).
Kommandeur, J., in Physics and Chemistry of the Organic Solid State (edit, by Labes, M. M., Fox, D., and Weissberger, A.) (Interscience, 1965).
Herbstein, F. H., Perspectives in Structural Chemistry (edit, by Dunitz, J. D.), 4, 344 (Wiley, New York, 1971).
Fritchie, C. J., Acta Cryst., 20, 892 (1968).
Thomas, J. M., and Williams, J. O., in Surface and Defect Properties of Solids (edit, by Roberts, M. W., and Thomas, J. M.), 1, 129 (Chemical Society, London, 1972).
Bevis, M., and Crellin, E. B., Polymer, 12, 666 (1971).
Williams, J. O., J. Matls. Sci. (in the press).
Thomas, J. M., Williams, J. O., and Jones, W., in Reactivity of Solids (edit, by Anderson, J. S., Roberts, M. W., and Stone, F. S.) (Chapman and Hall, London, 1972).
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THOMAS, J. Superconducting Fluctuations in Complexes of Tetracyanoquinodimethane and Structural Imperfections. Nature Physical Science 244, 56–57 (1973). https://doi.org/10.1038/physci244056a0
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DOI: https://doi.org/10.1038/physci244056a0
