Electronic and electronic-vibrational phenomena in the new organic conductor ?-(ET)2[Hg(SCN)2Cl] with a metal-insulator transition |
| |
Authors: | R M Vlasova N V Drichko O O Drozdova R N Lyubovskaya |
| |
Institution: | (1) A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia;(2) Institute of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow province, Russia |
| |
Abstract: | The reflection spectra and optical conductivity spectra of the new organic conductor ϰ-(ET)2Hg(SCN)2Cl] with a metal-insulator transition in the spectral regions 700–5500 and 9000–40 000 cm−1 have been studied in polarized light at 300 K. A comparisonis made between the spectra obtained and the corresponding spectra
of related isostructural conductors based on the ET molecule, and also the properties of the crystal structure of the investigated
compounds. An electronic transition between the ET molecules of the dimer (ET)
2
+
in the spectral region 700–5500 cm−1 has been identified, as have the features of the electronic-vibrational structure arising as a consequence of the interaction
of this transition with the completely symmetric intramolecular vibrations of the ET molecule. It is found that the conductor
with the stronger dimer interaction between the ET molecules has the higher the transition temperature.
Fiz. Tverd. Tela (St. Petersburg) 39, 1313–1319 (August 1997) |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|