Low-lying electronic excitations and nonlinear optic properties of polymers via symmetrized density matrix renormalization group method

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

A symmetrized Density Matrix Renormalization Group procedure together with the correction vector approach is shown to be highly accurate for obtaining dynamic linear and third order polarizabilities of one-dimensional Hubbard and U - V models. The U - V model is seen to show characteristically different third harmonic generation response in the CDW and SDW phases. This can be rationalized from the excitation spectrum of the systems.

Original languageEnglish (US)
Pages (from-to)1019-1022
Number of pages4
JournalSynthetic Metals
Volume85
Issue number1-3
DOIs
StatePublished - Mar 15 1997

Keywords

  • Excitation spectra calculations
  • Many-body and quasiparticle theories
  • Models of non-linear phenomena
  • Non-linear optical method
  • Semiempirical models and model calculations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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