J. Phys. IV France
Volume 131, December 2005
Page(s) 33 - 37
Published online 18 January 2006
International Workshop on Electronic Crystals
S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 33-37

DOI: 10.1051/jp4:2005131007

13C NMR spectral study of Q1D organic conductor (TMTTF)2AsF6

S. Fujiyama and T. Nakamura

Institute for Molecular Science, Okazaki 444-8585, Japan

We report 13C NMR spectra of a quasi-one-dimensional quarter-filled organic material (TMTTF)2AsF6, which undergoes charge ordering ( $T_{{\rm CO}} = 102$ K) and spin-Peierls phase transitions ( $T_{{\rm SP}} = 14$ K). We found that the doubly split NMR lines originating from charge ordering again merge into one line at $T_{{\rm SP}}$. This shows redistribution of charge densities or suppression of charge ordering across the spin-Peierls transition.

© EDP Sciences 2005