ORIGIN OF THE RESISTIVITY ANOMALIES OF (EDT-TTF)[M(DMIT)(2)] (M=NI, PD)

被引:27
作者
KOBAYASHI, A
SATO, A
KAWANO, K
NAITO, T
KOBAYASHI, H
WATANABE, T
机构
[1] TOHO UNIV,FAC SCI,DEPT CHEM,FUNABASHI,CHIBA 274,JAPAN
[2] TOKYO UNIV MARINE SCI,DEPT GEN EDUC,MINATO KU,TOKYO 108,JAPAN
关键词
D O I
10.1039/jm9950501671
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
alpha-(EDT-TTF)[Ni(dmit)(2)] comprises crossing columns of EDT-TTF and Ni(dmit)(2) and exhibits unique metallic behaviour with a characteristic resistivity peak at around 14 K. The possibility of the development of the superstructure was examined down to 9 K by using a low-temperature imaging plate X-ray system, but no extra X-ray reflections could be found below 14 K. The 14 K anomaly is, therefore, thought not to originate from charge density wave (CDW) instability New phases of gamma-(EDT-TTF)[Pd(dmit)(2)] and gamma-(EDT-TTF)[Ni(dmit)(2)] were found. gamma-(EDT-TTF)[Pd(dmit)(2)] has parallel columns of EDT-TTF and Pd(dmit)(2) and shows a resistivity anomaly around 80 K. Below 80 K, X-ray satellite reflections indicating CDW formation were observed. gamma-(EDT-TTF)[Ni(dmit)(2)] undergoes a metal-insulator transition at around 100 K.
引用
收藏
页码:1671 / 1679
页数:9
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