Abstract
Earlier incorrect proposals for organic superconductors have the virtue of pinpointing the need for a deeper understanding of the metallic state in organic materials. Accordingly, we consider the effects of interstack coupling on the electronic band structure of TTF‐TCNQ, showing that a one‐electron theory predicts semimetallic behavior. We argue, however, that this state is unstable at low T against a ferroelectric distortion perpendicular to the stacking axis, which produces a gap. With increasing T, the gap is filled by states which are localized (in the Anderson sense) by thermal disorder on individual stacks, thereby restoring one‐dimensional metallic conductivity.
Original language | English (US) |
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Pages (from-to) | 491-498 |
Number of pages | 8 |
Journal | International Journal of Quantum Chemistry |
Volume | 8 |
Issue number | 8 S |
DOIs | |
State | Published - 1974 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Physical and Theoretical Chemistry