Isotope effect on the Peierls transition temperature of TTF-TCNQ |
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| Authors: | J.R. Cooper J. Lukatela M. Miljak J.M. Fabre L. Giral E. Aharon-Shalom |
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| Affiliation: | Institute of Physics of the University, P.O. Box 304, Zagreb, Yugoslavia;Laboratoire de Chimie Organique Structurale, USTL, 30460 Montpellier, France;The Hebrew University, Jerusalem, Israel |
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| Abstract: | Conductivity measurements on isotopically substituted single crystals of TTF-TCNQ show a relatively large shift in the phase transition temperatures at 52.5 K (T1) and 37.7 K (T3). Deuteration of both TTF and TCNQ chains increases T1 by 0.75 ± 0.15 K, N15 substitution increases T1 by 0.6 ± 0.1 K while deuteration of the TTF chains apparently has no significant effect. Different possible interpretations of these results are briefly discussed. |
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