J. Phys. IV France 114 (2004) 123
Competition electronic states of (TMTTF) 2MF 6: ESR investigationsT. Nakamura1, 2, 1 and K. Maeda2
1 Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
2 The Graduate University for Advanced Studies, Myodaiji, Okazaki 444-8585, Japan
ESR measurements were performed to investigate the low-temperature electronic states of (TMTTF) 2MF 6 ( M = P, As, Sb and their mixed alloys). The temperature dependence of the ESR linewidth, , of AsF 6 does not change its anisotropy at around . On the other hand, PF 6 and some P-AsF 6 alloys show changes of the anisotropy at around , suggesting reconstruction of electronic charges. We propose the possible charge ordering configuration in the vicinity of the low temperature ground states from the ESR point of view. Key words. TMTTF - Charge Ordering - ESR.
© EDP Sciences 2004