J. Phys. IV France 114 (2004) 327
13C-NMR study on -(BEDT-TTF) 2XA. Kawamoto1, 1, Y. Honma1, M. Yamashita1, J. Sasaki1, S.-I. Okitsu1 and K.-I. Kumagai1
1 Division of Science, Graduate School of Science, Hokkaido University, Kita10 Nishi8 Kita-ku, Sapporo, Hokkaido 060-0810, Japan
-(BEDT-TTF) 2X salts show the variety physical properties from the superconductivity to the magnetic ordering. It is important to investigate the characters of -(BEDT-TTF) 2X from microscopic probes, systematically. 13C-NMR is a one of the most powerful tool for this aim. In order to study the variety physical properties on of -(BEDT-TTF) 2X, We performed single crystal 13C-NMR works on deuterized samples, alloy system etc. Here we report especially about -(BEDT-TTF) 2Cu 2(CN) 3 from our a several approaches in this proceedings. Recently, for -(BEDT-TTF) 2Cu 2(CN) 3, the magnetic frustrations are pointed out. However, we found the evidence of the electron localization phenomenon on this salt from 13C-NMR work. Key words. -(BEDT-TTF) 2 Cu 2(CN) 3, 13C-NMR, Electron Localization.
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