Mechanism of conduction in TTF and TMTSF organic conductors from a study of their vibrational spectra

Autor:	A. T. Oza, Arbinda Ray, G. K. Solanki, Anand Amin
Rok vydání:	2010
Předmět:	Semiconductor Materials science Mean field theory Condensed matter physics business.industry Band gap Transition temperature General Physics and Astronomy Charge density Infrared spectroscopy Direct and indirect band gaps business Absorption (electromagnetic radiation)
Zdroj:	Indian Journal of Physics. 84:1527-1540
ISSN:	0974-9845 0019-5480
DOI:	10.1007/s12648-010-0141-9
Popis:	The charge transfer complexes of organic donors TTF and TMTSF have been prepared and studied with infrared spectroscopy. The nature of transition has been studied by analyzing features of absorption. TTF-TCNQ was found to be a Peierls semiconductor and not metallic. This shows that the mean field transition temperature is operative in TTF-TCNQ. TMTSF-TCNQ and TMTSF-DDQ showed lesser band gap than that of TTF-TCNQ. TTF-DDQ and TTF-I2 also showed very small band gap and were more conducting than TTF-TCNQ. The band gaps could be assigned to either the Peierls gap or the pinning gap of charge density waves.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a416362f071f4753e28feeb23845342e https://doi.org/10.1007/s12648-010-0141-9 Zobrazit plný text záznamu Full text from SpringerLink