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

Document Type

Article

Publication Date

11-15-2006

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. © EDP Sciences.

Identifier

33751255394 (Scopus)

Publication Title

Europhysics Letters

External Full Text Location

https://doi.org/10.1209/epl/i2006-10332-1

e-ISSN

12864854

ISSN

02955075

First Page

670

Last Page

676

Issue

4

Volume

76

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