Nonpolar optical scattering of positronium in magnesium fluoride

I. V. Bondarev, Y. Nagai, M. Kakimoto, T. Hyodo

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We report the results of the analysis of the temperature broadening of the momentum distribution of delocalized positronium (Ps) in magnesium fluoride in terms of the optical deformation-potential scattering model (long-wavelength optical phonons). The Ps optical deformation-potential coupling constant Do in MgF2 has been determined to be (1.8±0.3)×109 eVcm. We also show that the Ps momentum distribution is sensitive to second-order phase transitions in those crystals where optical deformation-potential scattering is allowed in one and forbidden in another crystalline phase.

Original languageEnglish
Article number012303
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number1
DOIs
Publication statusPublished - 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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