J. Phys. IV France 09 (1999) Pr10-353-Pr10-355
Charge ordering in organic conductorsK. Kanoda1, 2, K. Miyagawa1, A. Kawamoto3 and K. Hiraki1, 4
1 Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
2 PRESTO, Japan Science and Technology Corporation, Japan
3 Department of Physics, Hokkaido University, Kita-ku, Sapporo 060-0810, Japan
4 Department of Physics, Gakushuin University, Toshima-ku, Tokyo 171-8588, Japan.
The charge ordering phenomena in the organic conductors, (R1,R2-DCNQI)2M, have been studied by 13C and 15N NMR spectroscopy. The π electron ordering in (I,I-DCNQI)2Ag and Cu d electron ordering in (CD3,CD3-DCNQI)2Cu, which are evidenced by splitting of the NMR line, show quite different behaviors in the charge profile and the order of the transition, reflecting the different driving forces. The analysis of Knight shifts revealed that the π spin susceptibility dominates the d spin susceptibility in the π-d hybridized metallic state.
© EDP Sciences 1999