THE ELECTRICAL AND OPTICAL-PROPERTIES OF ALPHA-BETS2I3 AND ALPHA-(BEDT-STF)2I3

被引：13

作者：

INOKUCHI, M

TAJIMA, H

KOBAYASHI, A

KURODA, H

KATO, R

NAITO, T

KOBAYASHI, H

机构：

[1] UNIV TOKYO,INST SOLID STATE PHYS,TOKYO 106,JAPAN

[2] TOHO UNIV,FAC SCI,DEPT CHEM,CHIBA 274,JAPAN

来源：

SYNTHETIC METALS | 1993年 / 56卷 / 01期

关键词：

ALPHA-BETS2I3; ALPHA-(BEDT-STF)2I3; METAL-INSULATOR TRANSITION REFLECTANCE SPECTRUM; MAGNETORESISTANCE; HIGH PRESSURE;

D O I：

10.1016/0379-6779(93)90447-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Alpha-BETS2I3 and alpha-(BEDT-STF)2I3, which are analogous of alpha-(BEDT-TTF)2I3, exhibit a metal-insulator-(M-I) transition. Polarized reflectance spectrum and magnetoresistarice under high pressure were studied on these salts in order to investigate the electronic structures and the phase transition. The change of reflectance spectrum accompanying M-1 transition was found to be considerably smaller in alpha-BETS2I3 and alpha-(BEDT-STF)2I3 than in alpha-(BEDT-TTF)2I3. Application of pressure suppresses the M-1 transition for both salts. Alpha-BETS2I3 becomes metallic under 9Kbar over the whole temperature region. A large positive magnetoresistance is observed in this metallic state alpha-BETS2I3 even at relatively high temperature.

引用

页码：2495 / 2500

页数：6

共 5 条

[1] SYNTHESIS, STRUCTURE AND PHYSICAL-PROPERTIES OF A TWO-DIMENSIONAL ORGANIC METAL, DI[BIS(ETHYLENE-DITHIOLO)TETRATHIOFULVALENE] TRIIODIDE, (BEDT-TTF)2+I3- [J].