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We report ^{13}C NMR spectra and nuclear spin lattice relaxation rate 1/T_1for a quasi-one-dimensional quarter-filled organic material (TMTTF)_{2}AsF_{6},which undergoes charge ordering (T_{{CO}} = 102 K) and spin-Peierls phasetransitions (T_{{SP}} = 14 K). The ratio of two 1/T_1 for the charge acceptingand donating TMTTF sites which grows from T_{CO} finally saturates inapproaching T_{{SP}}, indicating one spin correlation function even in thecharge ordered state. Below T_{{SP}}, however, the doubly split NMR lines frominequivalently charged molecules merge into one line, originated from thevariation in charge densities. This shows that a rearrangement of the chargeconfiguration occurs at T_{{SP}}.Comment: To appear in Journal of the Physical Society of Japan, Vol. 75 No.

Redistribution of Electronic Charges in Spin-Peierls State in (TMTTF)2AsF6Observed by13C NMR

Redistribution of Electronic Charges in Spin-Peierls State in (TMTTF)₂AsF₆Observed by¹³C NMR