首页> 外文期刊>Solid State Communications >Soliton excitations in pernigraniline-base polymer: Effects of next-nearest-neighbor hopping
【24h】

Soliton excitations in pernigraniline-base polymer: Effects of next-nearest-neighbor hopping

机译:肾上腺素基聚合物中的孤子激发:下一个最近邻跳跃的影响

获取原文
获取原文并翻译 | 示例
           

摘要

Next-nearest-neighbor hopping interaction is considered to investigate the soliton excitations in a pernigraniline-base polymer on the basis of the Baranowski-Buettner-Voit model. Numerical calculations show that the valence band (VB) expands to a larger range and the conduction band (CB) acts to the contrary. For a positive combined soliton, some new shallow levels emerge at the top edge of both the VB and CB with the increase in the next-nearest-neighbor coupling strength. For a negative combined soliton, only one bound state (the soliton state) appears in the Peierls gap and no other shallow levels exist. We find that, while the coupling strength β takes the value 0.04, the calculated charged soliton excitations (1.15 eV for S~+ and 1.34 eV for S~-) are in good agreement with the low-energy photo-induced absorption peak (1.0 and 1.3 eV).
机译:在Baranowski-Buettner-Voit模型的基础上,考虑了最近邻跳跃跃迁相互作用,以研究邻位肾上腺素基聚合物中的孤子激发。数值计算表明,价带(VB)扩展到更大的范围,而导带(CB)相反。对于正组合孤子,随着下一个近邻耦合强度的增加,在VB和CB的顶部边缘出现一些新的浅层。对于负的组合孤子,在Peierls间隙中仅出现一个束缚态(孤子态),而没有其他浅能级存在。我们发现,尽管耦合强度β取值为0.04,但计算得出的带电孤子激发(S〜+为1.15 eV,S〜-为1.34 eV)与低能光致吸收峰(1.0和1.3 eV)。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号