Theoretical estimation of the electron-molecular vibration coupling in several organic donor molecules

被引：19
|
作者：
Taniguchi, M [1 ]
Misaki, Y [1 ]
Tanaka, K [1 ]
机构：
[1] Kyoto Univ, Grad Sch Engn, Dept Mol Engn, Kyoto 6068501, Japan
来源：
SOLID STATE COMMUNICATIONS | 2000年 / 114卷 / 02期
基金：
日本学术振兴会;
关键词：
organic crystals; superconductors; electron-phonon interactions;
D O I：
10.1016/S0038-1098(00)00008-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The electron-molecular vibration (EMV) coupling constants and the accompanying vibronic energy values of five kinds of organic donor molecules (TTF+1, TTP+1, TTPY+1, TOF+1 and TSF+1) are crucial ingredients of metallic organic salts, and have been theoretically estimated in order to systematically investigate their dependencies on the molecular structures. The effect of the replacement of sulfur atoms in TTF+1 with oxygen and selenium atoms (TOF+1 and TSF+1) has been paid particular attention. It has been found that the EMV coupling constant decreases in the order of TOF+1 > TTF+1 > TSF+1 > TTP+1 > TTPY+1. That is, the smaller coupling constants appear in the larger-sized molecule with heavier atoms. (C) 2000 Elsevier Science Ltd. All rights reserved.
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页码：75 / 79
页数：5
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