The news correspondents obtained a quote from the research, "The polytypic crystal structures influence the local electronic properties and the internal electric fields due to the spontaneous polarization in non-cubic crystals.In this paper we give a comprehensive review on the thermodynamic, structural, and electronic properties of twelve Al, Ga, and In antimonides, arsenides, phosphides, and nitrides as derived from ab initio calculations. Their lattice parameters, energetic stability, and characteristic band structure energies are carefully discussed and related to the atomic geometries of the polytypes. Chemical trends are investigated. Band offsets between polytypes and their consequences for heterocrystalline structures are derived. The described properties are discussed in the light of available experimental data and previous computations."
According to the news reporters, the research concluded: "Despite several contradictory results in the literature, a unified picture of the III-V polytypes and their heterocrystalline structures is developed."
For more information on this research see: Structure, energetics, and electronic states of III-V compound polytypes.
Our news journalists report that additional information may be obtained by contacting F. Bechstedt, Institut fur Festkorpertheorie und -optik, Friedrich-Schiller-Universitat, Max-Wien-Platz 1, D-07743 Jena,
Keywords for this news article include: Jena,
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