We present a theoretical study on the superconductivity of β′-(BEDT-TTF)2ICl2 at Tc=14.2 K under a high hydrostatic pressure recently found, which is the highest among organic superconductors. In the present work, we study an effective model using the fluctuation-exchange (FLEX) approximation based on the results of first-principles calculation. In the obtained phase diagram, the superconductivity with dxy-like symmetry is realized next to the antiferromagnetic phase, as a result of the one-dimensional to two-dimensional crossover driven by the pressure.
@article{arxiv.cond-mat/0311436,
title = {Phase Diagram of $\beta'$-(BEDT-TTF)$_2$ICl$_2$ under High Pressure Based on the First-Principles Electronic Structure},
author = {Hiori Kino and Hiroshi Kontani and Tsuyoshi Miyazaki},
journal= {arXiv preprint arXiv:cond-mat/0311436},
year = {2009}
}
Comments
4 pages, 3 figures. accepted for publication in J. Phys. Soc. Jpn. errors corrected