NMR INVESTIGATIONS OF THE ORGANIC METALS AND SUPERCONDUCTORS ALPHA-(BEDT-TTF)2I3, BETA-(BEDT-TTF)2I3 AND ALPHA-T-(BEDT-TTF)2I3

被引：8

作者：

HENNIG, I ^{[1
]}

HAEBERLEN, U ^{[1
]}

HEINEN, I ^{[1
]}

SCHWEITZER, D ^{[1
]}

KELLER, HJ ^{[1
]}

机构：

[1] UNIV HEIDELBERG,INST ANORGAN CHEM,D-6900 HEIDELBERG,FED REP GER

来源：

PHYSICA C | 1988年 / 153卷 / 01期

关键词：

Superconductivity;

D O I：

10.1016/0921-4534(88)90699-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

1H and 13C spin lattice relaxation rates as well as 13C Knight shifts of the quasi two dimensional organic metal α-, β- and αt-(BEDT-TTF)2I3 are reported. In β- and αt-(BEDT-TTF)2I3 at temperatures below 100 K the Korringa relation is fulfilled. Near the critical temperature of 8 K of the stable superconducting state of αt-(BEDT-TTF)2I3 an enhancement of the proton spin lattice relaxation rate due to superconducting fluctuations is observed. The observed individual 13C Knight shifts, as measured by magic angle sample spinning and cross polarization methods range between -6 and +244 ppm for α- phase and -10 and +125 ppm for β- and αt- phase crystals.

引用

页码：493 / 494

页数：2

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