Multiquanta breather model for PtCl

N. K. Voulgarakis, G. Kalosakas, A. R. Bishop, G. P. Tsironis

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Abstract

We study the many-quanta problem of an intramolecular vibrational excitation interacting with optical phonons, that may represent the nonlinearity from intrinsic electron-lattice interactions. In the adiabatic limit we calculate numerically the ground-state energy and the corresponding wave functions for N vibrational quanta. In the one-dimensional case we find strong redshifts in the overtone spectra and an increasing spatial localization as the number of quanta increases. Through model parameter fitting we achieve very good quantitative agreement with experimental resonant Raman scattering measurements in the quasi-one-dimensional charge transfer solid PtCl. Accurate analytical expressions for the redshifts are also obtained.

Original languageEnglish
Article number020301
Pages (from-to)203011-203014
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number2
Publication statusPublished - Jan 1 2001
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Voulgarakis, N. K., Kalosakas, G., Bishop, A. R., & Tsironis, G. P. (2001). Multiquanta breather model for PtCl. Physical Review B - Condensed Matter and Materials Physics, 64(2), 203011-203014. [020301].