Electron Spin Dynamics in (DMe-DCNQI)2M (M = Li1-x Cu x (x < 0.14), Ag)期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Electron Spin Dynamics in (DMe-DCNQI)2M (M = Li1-x Cu x (x < 0.14), Ag)

Authors:	Maki Hiraoka Hirokazu Sakamoto Kenji Mizoguchi Reizo Kato Tatsuhisa Kato Tosikazu Nakamura Kou Furukawa Koichi Hiraki Toshihiro Takahashi Takashi Yamamoto Hiroyuki Tajima

Affiliation:	(1) CERC, AIST, Tsukuba 305-8562, Japan;(2) Department of physics, Tokyo Metropolitan University, Tokyo 192-0397, Japan;(3) RIKEN, Saitama 351-0198, Japan;(4) Department of Chemistry, Josai University, Saitama 350-0295, Japan;(5) Institute for Molecular Science, Okazaki 444-8585, Japan;(6) Department of Physics, Gakushuin University, Tokyo 171-8588, Japan;(7) Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan

Abstract:	The quarter-filled π band systems, (DMe-DCNQI)_2M(M=Li_1-xCu_x (x ≤ 0.14), Ag) were systematically studied with electron paramagnetic resonance (EPR). The intercolumn spin hopping rate $D_\bot$ in Li_1-xCu_x-salt was obtained from the EPR linewidth. The temperature dependence of $D_\bot$ can be understood with the hole soliton model which also explains the DC conductivity. The π−d mixing of the Cu-salt enhances both $D_\bot$ and $\sigma_\bot$ by 10³ times more than the Li-salt, which is consistent with the fact that the only Cu-salt has three-dimensional Fermi surface, but that Ag-salt is one-dimensional in spite of the mixing enhancement of $D_\bot$ by 10 times more than the Li-salt.

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