Theory of local electric polarization and its relation to internal strain: Impact on polarization potential and electronic properties of group-III nitrides

We present a theory of local electric polarization in crystalline solids and apply it to study the case of wurtzite group-III nitrides. We show that a local value of the electric polarization, evaluated at the atomic sites, can be cast in terms of a summation over nearest-neighbor distances and Born...

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Veröffentlicht in:	Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2013-12, Vol.88 (21), Article 214103
Hauptverfasser:	Caro, Miguel A., Schulz, Stefan, O’Reilly, Eoin P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bowing Condensed matter Electric polarization Electronic properties Energy gap Indium gallium nitrides Nitrides Polarization
Online-Zugang:	Volltext
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