Novel metallic state carrying localized spins in the molecular conductor (DMET)2FeBr4

被引：12

作者：

Enoki, T ^{[1
]}

Umeyama, T

Miyazaki, A

Nishikawa, H

Ikemoto, I

Kikuchi, K

机构：

[1] Tokyo Inst Technol, Dept Chem, Meguro Ku, Tokyo 1528551, Japan

[2] Tokyo Metropolitan Univ, Dept Chem, Tokyo 1920397, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.81.3719

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

(DMET)(2)FeBr4 which undergoes a metal-insulator transition at T-c= 200 K has an alternating stacked structure of DMET donor conducting sheets and FeBr4 magnetic sheets. Above T-c it is in a quasi-1D quarter-filled metallic state, where the Curie-Weiss type magnetism is described in terms of DMET+ donor spins and Fe3+ spins. Below T-c the magnetism, governed only by Fe3+ spins, shows antiferromagnetic order at T-N = 3.5 K. The localized spin feature of pi carriers above T-c, which contradicts metallic conduction, is reasonably well understood in terms of the sliding motion of a Wigner lattice state. [S0031-9007(98)07440-7].

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页码：3719 / 3722

页数：4

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