Density waves in the organic metal α-(BEDT-TTF)2KHg(SCN)4

被引：0
|
作者：
Kato, M [1 ]
机构：
[1] Osaka Prefecture Univ, Grad Sch Engn, Dept Math Sci, Sakai, Osaka 5998531, Japan
来源：
PHYSICA B-CONDENSED MATTER | 2003年 / 329卷
关键词：
organic conductors; BEDT-TTF; density waves;
D O I：
10.1016/S0921-4526(02)02118-X
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have investigated possible spin and charge density waves in the organic metal alpha-(BEDT-TTF)(2)KHg(SCN)(4). This system shows density wave like transition at T = 8 K, and the nature of the density wave is not clarified up to now. Using a realistic tight binding model and an inhomogeneous mean-field theory, we obtained several stable density wave states. Especially, spin density wave states (SDW) are stable only for large on-site Coulomb interaction Ugreater than or equal to400 meV. Their spin moments are tiny and inhomogeneous even in the unit cell. Also charge density wave appears simultaneously with the SDW. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：1199 / 1200
页数：2
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