Asymmetry of the Atomic Core Structure of Dissociated a-Screw Dislocation in GaN Probed by Polarization Optical Spectroscopy

Oleg Medvedev, Martin Albrecht, Oleg Vyvenko

Research output

1 Citation (Scopus)

Abstract

The a-screw dislocation related luminescence (DRL) in n-GaN is investigated with polarization optical spectroscopy. An unusual difference in the polarization directions of two DRL spectral components is observed: directed parallel or inclined at an angle of about 40° to the dislocation line. As a tentative explanation, that property is proposed to be due to the theoretically predicted different orientations of chemical bonds in the cores of N and Ga partials of the dissociated a-screw dislocation.

Original languageEnglish
Article number1900169
JournalPhysica Status Solidi - Rapid Research Letters
Volume13
Issue number9
Early online date24 May 2019
DOIs
Publication statusPublished - 2019

Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)

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