C-13 NMR-STUDY OF LAYERED ORGANIC SUPERCONDUCTORS BASED ON BEDT-TTF MOLECULES

被引：175

作者：

KAWAMOTO, A ^{[1
]}

MIYAGAWA, K ^{[1
]}

NAKAZAWA, Y ^{[1
]}

KANODA, K ^{[1
]}

机构：

[1] INST MOLEC SCI,OKAZAKI,AICHI 444,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.74.3455

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The normal state of the layered organic superconductors κ-(BEDT-TTF)2X (X=Cu(NCS)2 and Cu[N(CN)2]Br) has been studied by 13C NMR for the first time. The nuclear spin-lattice relaxation rate, T1-1, is greatly enhanced over the value expected from the Korringa relation and shows an anomalous peak around 50 K for both compounds. This is the first experimental evidence of strong antiferromagnetic spin fluctuations in these materials. The depression of the spin fluctuations observed below 50 K coincides with an appearance of Fermi liquid behavior in the charge transport. © 1995 The American Physical Society.

引用

页码：3455 / 3458

页数：4

共 19 条

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