Size dependence of second-order hyperpolarizability of finite periodic chains under Su-Schrieffer-Heeger model

S. D. Jiang, M. Z. Xu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The second hyperpolarizability γN (-3ω; ω, ω, ω) of N double-bond finite chain of trans-polyacetylene is analyzed using the Su-Schrieffer-Heeger model to explain qualitative features of the size dependence behavior of γN. Our study shows that γN /N is nonmonotonic with N and that the nonmonotonicity is caused by the dominant contribution of the intra-band transition to γN in polyenes. Several important physical effects are discussed to reduce quantitative discrepancies between experimental and our results.

Original languageEnglish (US)
Pages (from-to)670-676
Number of pages7
JournalEurophysics Letters
Volume76
Issue number4
DOIs
StatePublished - Nov 15 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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