Electronic structure of random copolymers

Kyozaburo Takeda*

*この研究の対応する著者

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The electronic structure of random copolymers (RCP) is theoretically investigated by the single-site coherent potential approximation. The results are also compared with those by the band calculation for the corresponding ordered system. In the A1 -xBx binary RCP, a strong reduction in the system band gap (Eg(A1-xBx)) is found in the dilute B region when the system has the relation of Eg(A)>Eg(B). This dependence is caused by the asymmetric quenching in the density-of-states (DOS) singularity at the band-edge states. The gap-opening mechanism and the asymmetric quenching are discussed by focusing on the role of the spatial dimension on the electronic structure of the random system, and the theoretical treatment is finally applied to the calculation of the joint DOS for the Si-Ge RCP system.

本文言語English
ページ(範囲)323-337
ページ数15
ジャーナルJournal of Mathematical Chemistry
15
1
DOI
出版ステータスPublished - 1994 12月 1
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 応用数学

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