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Phase Diagram of $\beta'$-(BEDT-TTF)$ 2$ICl$ 2$ under High Pressure Based on the First-Principles Electronic Structure by Kino, Hiori; Kontani, Hiroshi; Miyazaki, Tsuyoshi is a scholarly article available to read on EtoBox.

What is Phase Diagram of $\beta'$-(BEDT-TTF)$ 2$ICl$ 2$ under High Pressure Based on the First-Principles Electronic Structure about?

We present a theoretical study on the superconductivity of $\beta'$-(BEDT-TTF)$_2$ICl$_2$ at $T_{\rm c}=$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 $d_{xy}$-like symmetry is realized next to the antiferromagnetic phase, as a result of the one-dimensional to two-dimensional crossover driven by the pressure.

Author

Kino, Hiori; Kontani, Hiroshi; Miyazaki, Tsuyoshi

Published

2003

Language

EN