Effects of uniaxial strain on transport properties of organic conductor α-(BEDT-TTF)2I3 and discovery of superconductivity

被引：117

作者：

Tajima, N ^{[1
]}

Ebina-Tajima, A

Tamura, M

Nishio, Y

Kajita, K

机构：

[1] RIKEN, Condensed Mol Mat Lab, Wako, Saitama 3510198, Japan

[2] Toho Univ, Dept Phys, Chiba 2748510, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2002年 / 71卷 / 08期

关键词：

alpha-(BEDT-TTF)(2)I-3; superconductor; narrow gap semiconductor; charge order; uniaxial strain;

D O I：

10.1143/JPSJ.71.1832

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate that an organic conductor alpha-(BEDT-TTF)(2)I-3 exhibits various types of transport phenomena when compressed along some crystal axes. When the sample is strained along the a-axis, the low-temperature electronic state changes from a charge-ordered insulating state under small strains to a narrow gap semiconductor state under large strains. In between these two states, there appears a superconducting state with a T-c of about 7 K. When compressed along the b-axis, on the other hand, this material behaves as a typical quasi-two-dimensional metal with large Fermi surfaces.

引用

页码：1832 / 1835

页数：4

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