Comments on the metallic conductivity of tetrathiafulvalenium-tetracyanoquinodimethanide (TTF-TCNQ)
- 15 February 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 19 (4), 2404-2408
- https://doi.org/10.1103/physrevb.19.2404
Abstract
The anomalously large pressure dependence of the conductivity of tetrathiafulvalenium-tetracyanoquinodimethanide and some related charge-transfer salts is discussed. It appears to be ten times larger than the pressure dependence of the one-electron bandwidth and thus is not easily understood in terms of single-particle scattering processes. It also gives an important contribution to the temperature dependence of the conductivity and probably all other Fermi-level properties via the effect of thermal expansion.Keywords
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