First-principles calculations of nonlinear optical response functions in semiconductors

Sergey N. Rashkeev, Walter R.L. Lambrecht

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Abstract

We present our implementation of the length-gauge formalism of Sipe and coworkers (Phys. Rev. B 48, 11705 (1993); ibid 52, 14636 (1995)) using the linearized muffin-tin orbital (LMTO) method and discuss its application to the calculation of second order response functions. The importance of gap corrections beyond LDA is discussed. As primary application, we discuss the second harmonic generation (SHG) coefficients of the SiC polytypes and of the chalcopyrites of both the II-IV-V2 and I-III-VI2 families. These examples illustrate the relation of the second order response function to the modification of the crystal structure and chemical substitutions.

Original languageEnglish
Pages (from-to)137-148
Number of pages12
JournalMaterials Research Society Symposium - Proceedings
Volume579
DOIs
Publication statusPublished - 1 Jan 2000

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ASJC Scopus subject areas

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

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