Article ID Journal Published Year Pages File Type
1784230 Infrared Physics & Technology 2014 5 Pages PDF
Abstract

•InAs1−x−ySbxPy quaternary system lattice matched to InAs.•Lattice mismatching InAs1−x−ySbxPy quaternary system.•Dielectric properties of InAs1−x−ySbxPy quaternary system.•Lattice dynamics of InAs1−x−ySbxPy quaternary system.

Based on the pseudopotential formalism under the virtual crystal approximation, the dielectric and lattice vibration properties of zinc-blende InAs1−x−ySbxPy quaternary system under conditions of lattice matching and lattice mismatching to InAs substrates have been investigated. Generally, a good agreement is noticed between our results and the available experimental and theoretical data reported in the literature. The variation of all features of interest versus either the composition parameter x or the lattice mismatch percentage is found to be monotonic and almost linear. The present study provides more opportunities to get diverse high-frequency and static dielectric constants, longitudinal and transversal optical phonon modes and phonon frequency splitting by a proper choice of the composition parameters x and y (0 ⩽ x ⩽ 0.30, 0 ⩽ y ⩽ 0.69) and/or the lattice mismatch percentage.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Atomic and Molecular Physics, and Optics
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