Optical susceptibilities of polymers: current–current versus dipole–dipole correlation

1999/05/27 by Minzhong Xu, Xin Sun · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Nonlinear Optical Materials Research #Nonlinear Optical Materials Studies #Nonlinear Photonic Systems #cond-mat.str-el #physics.optics

paper · pdf · doi:10.1016/s0375-9601(99)00288-1

published as Phys. Lett. A Vol. 257, 215 (1999)

arxiv created 1999/05/27 · openalex publication_date 1999/06/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The static current operator leads to definitional zero frequency divergence and unphysical results in studying nonlinear optical susceptibilities of polymers. A well-defined dipole–dipole correlation is superior to the complicated current–current correlation to solve this problem. As illustrative examples, optical susceptibilities under both SSH and TLM models of trans-(CH)x are studied. New analytical results are obtained. The reasons of previous improper results are analyzed.

Citations

• Solitons in conducting polymers

Cited by

• Zero-frequency divergence and the gauge phase factor in optical response theory
• Analytical solutions to the third-harmonic generation in trans-polyacetylene: Application of dipole-dipole correlation to single-electron models

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