Phase diagram of β′-(BEDT-TTF)2ICl2 under high pressure based on the first-principles electronic structure

被引：18

作者：

Kino, H

Kontani, H

Miyazaki, T

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[2] Saitama Univ, Dept Phys, Urawa, Saitama 3388570, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2004年 / 73卷 / 01期

关键词：

beta '-(BEDT-TTF)(2)ICI2; superconductivity; antiferromagnetism; pressure effects; FLEX;

D O I：

10.1143/JPSJ.73.25

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a theoretical study on the superconductivity of beta'-(BEDT-TTF)(2)ICl2 at T-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.

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页码：25 / 28

页数：4

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