THERMAL AND MAGNETIC-PROPERTIES IN ORGANIC METALS (DME-DCNQI)2CU, (DMEO-DCNQI)2CU AND (DME1-XMEBRX-DCNQI)2CU - ENHANCEMENT OF DENSITY OF STATES

被引：30
作者：
NISHIO, Y
KAJITA, K
SASAKI, W
KATO, R
KOBAYASHI, A
KOBAYASHI, H
机构：
[1] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN
[2] UNIV TOKYO,FAC SCI,DEPT CHEM,BUNKYO KU,TOKYO 113,JAPAN
[3] TOHO UNIV,FAC SCI,DEPT CHEM,FUNABASHI,CHIBA 274,JAPAN
来源：
SOLID STATE COMMUNICATIONS | 1992年 / 81卷 / 06期
关键词：
D O I：
10.1016/0038-1098(92)90595-Z
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have studied the electronic state in new type of organic conductors (DMe-DCNQI)2 Cu, (DMeO-DCNQI)2Cu and (DMe(1-x)MeBr(x)-DCNQI)2 Cu (0 < x < 0.10), measuring the low temperature specific heat and magnetic susceptibility. For the sample of (DMe0.945 MeBr0.055-DCNQI)2Cu, which reveals puzzling reentrant behavior in resistivity (metal- insulator- metal) with lowering temperature, an extraordinary enhancement of density of states at Fermi level is observed, Such remarkable properties of these Cu salts are discussed based on the mixed-valency of Cu atoms, which implies the mixing of 3d electrons of Cu into 2p-pi conduction band of DCNQI through Cu-N coordination bond.
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收藏
页码：473 / 476
页数：4
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