Ab-initio calculations of second order optical response functions in wurtzite GaN and AlN, and their short period superlattices

Sergey N. Rashkeev, Walter R.L. Lambrecht, B. Segall

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Second harmonic generation coefficients were calculated from first-principles for wurtzite GaN, AlN and the (0001) superlattices (SL) (GaN)n(AlN)n for n = 2, 4. The effects of the LDA gap underestimate are discussed. The SLs are found to have a strongly reduced static SHG response. The frequency dependent SHG coefficients are found to be sensitive to the SL band structure and to differ significantly form a superposition of the bulk components, indicating a strong intermixing of the bands.

Original languageEnglish
Pages (from-to)857-862
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume482
Publication statusPublished - 1 Dec 1997
EventProceedings of the 1997 MRS Fall Meeting - Boston, MA, USA
Duration: 1 Dec 19974 Dec 1997

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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