摘要：

Effects of impurities in polyacetylene are investigated numerically by using Su-Schrieffer-Heeger's model with short-ranged site-type impurities. Particular emphases are on the infrared activities. The change of the total electron number, due to impurity doping, is compensated by introducing the same numbers of positive and negative dopants. Soliton formation and its pinning due to the...

展开