Comment on the double transition observed in tetrathiafulvalene tetracyanoquinodimethane (TTF-TCNQ)

Guy Deutscher*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

For a periodic system composed of layers of type A (critical temperature TcA) alternating with layers of type B (TcB<TcA), where the A and B layers are weakly coupled together, a Landau-Ginzgurg free-energy functional predicts an anomalous behavior for the transverse coherence length ξŠ¥(T) with a peak at a temperature Ts‰3TcB in addition to the usual divergence at the critical temperature Tc of the system (TcB<Tc<TcA). It is suggested that this behavior may explain the features of the double transition observed in tetrathiafulvalene tetracyanoquinodimethane (TTF-TCNQ) by recent conductivity and x-ray measurements.

Original languageEnglish
Pages (from-to)2714-2716
Number of pages3
JournalPhysical Review B-Condensed Matter
Volume13
Issue number6
DOIs
StatePublished - 1976

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