Optical properties of α′-(BEDT-TTF)2IBr2

被引：4
|
作者：
Inokuchi, M [1 ]
Yakushi, K
Kinoshita, M
Saito, G
机构：
[1] Sci Univ Tokyo, Fac Sci & Engn, Dept Mat Sci & Engn, Yamaguchi 7560884, Japan
[2] Inst Mol Sci, Okazaki, Aichi 4448585, Japan
[3] Kyoto Univ, Grad Sch Sci, Dept Chem, Sakyo Ku, Kyoto 6068501, Japan
来源：
SYNTHETIC METALS | 1999年 / 103卷 / 1-3期
关键词：
organic conductors; structural and magnetic phase transitions; reflection spectroscopy; infrared and Raman spectroscopy;
D O I：
10.1016/S0379-6779(98)00458-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The molecular semiconductor alpha'-(BEDT-TTF)(2)IBr2, is known to undergo structural and magnetic phase transitions at around 200 K and 60 K, respectively. In order to elucidate the mechanism of these phase transitions, measurements of the polarised reflectance spectra and Raman spectra were carried out at low temperatures. In the reflectance spectra, the spectral change in the infrared region was observed at around 200 K. In the Raman spectra, the band at 1480 cm(-1) splits with decreasing temperature. No change was not observed for both measurements at around 60 K. We point out the possibility that the BEDT-TTFs may posses different charges in this salt.
引用
收藏
页码：2101 / 2102
页数：2
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