Conducting and Superconducting BEDT‐TTF Based Synmetals

Hau H. Wang, Mark A. Beno, M. ‐H Whangbo, Thomas J. Emge, Urs Geiser, K. Douglas Carlson, Eugene L. Venturini, Jack M. Williams

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Abstract

The synthesis, crystal structures and band electronic structures of BEDT‐TTF based synmetals are discussed, where BEDT‐TTF is bis(ethylenedithio)‐tetrathiofulvalene here abbreviated to “ET”. The electrical properties of ET:X salts above their phase transitions are either 1D [for (ET)2X, where X = ICl2, AuBr2, Au(CN)2 and Ag(CN)2], 2D metallic [for (ET)2X, where X = I3, AuI2, IBr2 and I2Br] or 3D metallic [for (ET)Ag4(CN)5]. The β‐(ET)2X (X = I3, AuI2 and IBr2) salts become ambient pressure organic superconductors at 1,4 K (or ∼ 8 K under pressure), 5.0 K, and 2.8 K, respectively. The variation of critical temperatures of this series of β‐(ET)2X salts are correlated to the respective changes in unit cell volume or in the density of electronic states at the Fermi level.

Original languageEnglish (US)
Pages (from-to)309-317
Number of pages9
JournalIsrael Journal of Chemistry
Volume27
Issue number4
DOIs
Publication statusPublished - 1986
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Wang, H. H., Beno, M. A., Whangbo, M. H., Emge, T. J., Geiser, U., Douglas Carlson, K., ... Williams, J. M. (1986). Conducting and Superconducting BEDT‐TTF Based Synmetals. Israel Journal of Chemistry, 27(4), 309-317. https://doi.org/10.1002/ijch.198600048