Electronic state of the organic salt (DI-DCNQI)(2)Ag, where DI-DCNQI is 2,5-diiodo-N,N'-dicyanoquinonediimine

被引：62

作者：

Hiraki, K ^{[1
]}

Kanoda, K ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.54.R17276

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

(DI-DCNQI)(2)Ag where DI-DCNQI is 2,5-diiodo-N,N' -dicyanoquinonediimine has been investigated by electrical resistance, magnetic susceptibility, and H-1 NMR measurements, and found to be nonmetallic with a charge gap of similar to 490 K and with spin susceptibility showing localization of the pi-electron spins. Antiferromagnetic ordering is evidenced at a low temperature. This is a first case of the electron antiferromagnet among the DCNQI-metal family in which the pi electrons on the DCNQI columns have an antiferromagnetic state. The nature of a Mott insulator demonstrates the importance of electronic correlation in the rr electrons in the DCNQI systems.

引用

页码：17276 / 17279

页数：4

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