Dynamical nonlinear optical coefficients from the symmetrized density-matrix renormalization-group method

Swapan K. Pati*, S. Ramasesha, Z. Shuai, J. L. Brédas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

We extend the symmetrized density-matrix renormalization-group method to compute the dynamic nonlinear optical coefficients for long chains. By computing correction vectors in the appropriate symmetry subspace, we obtain the dynamic polarizabilities, ̧ij(ω), and third-order polarizabilities γijkl(ω,ω,ω,) of the Hubbard and "U-V" chains in an all transpolyacetylene geometry, with and without dimerization. We rationalize the behavior of ᾱ and γ̄ on the basis of the low-lying excitation gaps in the system.

Original languageEnglish (US)
Pages (from-to)14827-14830
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume59
Issue number23
StatePublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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