Influence of crystal structure and quasiparticle effects on second-harmonic generation: Silicon carbide polytypes

被引：23

作者：

Adolph, B ^{[1
]}

Bechstedt, F ^{[1
]}

机构：

[1] Univ Jena, Inst Festkorpertheorie & Theoret Opt, D-07743 Jena, Germany

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.62.1706

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report numerical calculations of the frequency-dependent second-order optical susceptibility for different polytypes of silicon carbide. The atomic and electronic structures are taken from first-principles calculations. We combine the plane-wave-pseudopotential method with the generalized tetrahedron method to compute the second-order coefficients. The influence of crystal structure as well as of many-body effects due to quasiparticle corrections is discussed in detail. Full frequency dependent spectra are calculated including quasiparticle corrections beyond scissors operator approximation.

引用

页码：1706 / 1712

页数：7

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