H-1-NMR RELAXATION ANOMALY AT THE METAL-METAL TRANSITION IN THE SLOWLY-COOLED (BEDT-TTF)2CLO4(C2H3CL3)0.5

被引：1

作者：

TAKAHASHI, T ^{[1
]}

TSUCHIYA, R ^{[1
]}

KOMATSU, Y ^{[1
]}

SUZUKI, K ^{[1
]}

ENOKI, T ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,DEPT CHEM,MEGURO KU,TOKYO 152,JAPAN

来源：

SYNTHETIC METALS | 1993年 / 56卷 / 01期

关键词：

(BEDT-TTF)2CLO4(C2H3CL3)0.5; COOLING RATE EFFECT; MAGNETIC INSTABILITY; NMR RELAXATION ENHANCEMENT;

D O I：

10.1016/0379-6779(93)90449-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

H-1-NMR relaxation Tate, T1(-1), was measured in a two-dimensional organic conductor, (BEDT-TTF)2ClO4(C2H3Cl3)0.5, in order to investigate the nature of unusual transition dependent on the cooling rate of the sample. When the sample is cooled rapidly, H-1-T1(-1) follows a Korringa-like behavior down to 1.4K, in agreement with the metallic behavior of resistivity. On the other hand, in a slow cooling condition, a large enhancement of H-1-T1(-1) is observed below 50 K. A maximum of T1(-1) appearing around 10K is two orders of magnitude larger than the value in a rapid cooling condition. This seems to suggest a magnetic nature of the transition in the slowly-cooled sample, but an excess line broadening, expected in the standard magnetic transition, is not observed as far as the FID signal is concerned.

引用

页码：2507 / 2512

页数：6

共 20 条

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