RAMAN-SCATTERING IN FERROMAGNETIC TDAE-C60 COMPARED TO TDAE-C70

被引：7
|
作者：
DENISOV, VN
ZAKHIDOV, AA
RUANI, G
ZAMBONI, R
TALIANI, C
TANAKA, K
YOSHIZAWA, K
OKAHARA, T
YAMABE, T
ACHIBA, Y
机构：
[1] KYOTO UNIV,DEPT HYDROCARBON CHEM,KYOTO 606,JAPAN
[2] TOKYO METROPOLITAN UNIV,DEPT CHEM,TOKYO 158,JAPAN
[3] RUSSIAN ACAD SCI,INST SPECTROSCOPY,MOSCOW 14092,RUSSIA
[4] UZBEK ACAD SCI,DEPT THERMOPHYS,TASHKENT 700135,UZBEKISTAN
来源：
SYNTHETIC METALS | 1993年 / 56卷 / 2-3期
关键词：
D O I：
10.1016/0379-6779(93)90078-B
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Raman scattering at 1. 16 ev laser excitation has been studied in ferromagnetic TDAE-C60 and compared to that in paramagnetic TDAE-C70. The shift of H(g) and A(g) modes in TDAE-C60 indicates transfer of one electron to C60 while the broadening of H(g) modes is quite similar to metallic K3C60 meaning significant electron-phonon coupling of this Jahn - Teller vibrations. In TDAE-C 70 the lines are narrow sugesting suppresed electron- phonon interaction and hence smaller polaronic effects. Below T(c) of magnetic ordering the two-magnon excitations are not seen clearly however the low energy part of spectra shows somewhat incresed intensity. Upon air-exposure of TDAE-C60 all H(g) and A(g) Raman modes disappear while a new band appears at 1848 cm-1.
引用
收藏
页码：3050 / 3056
页数：7
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