Abstract
The results of Allender, Bray, and Bardeen for the paraconductivity above the Peierls transition in a one-dimensional system are modified to include the effects of high-frequency (optical) phonons and interchain coupling. A very good agreement with experiment on tetrathiofulvalene-tetracyanoquinodimethane (TTF-TCNQ) is thus obtained. In particular, it is shown that a mean-field theory based on low-frequency (acoustic) phonons is not consistent with the observed increase and temperature behavior of the conductivity above Tp, while high-frequency phonons (ω2pFT) fully account for the observed conductivity in the range TpT2 Tp.
| Original language | English |
|---|---|
| Pages (from-to) | 1086-1089 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 12 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1975 |