physica status solidi (a)

Cover image for Vol. 214 Issue 7

Editor: Stefan Hildebrandt (Editor-in-Chief), Sabine Bahrs (Deputy Editor)

Online ISSN: 1862-6319

Associated Title(s): physica status solidi (b), physica status solidi (c), physica status solidi (RRL) - Rapid Research Letters

207_06b/2010Back Cover (Phys. Status Solidi A 6/2010)

In the article by Ke Wang et al. (p. 1356), strong optical polarization anisotropy has been revealed for non-polar InN epilayers (a-plane and m-plane) in photoluminescence (PL) and absorption experiments. The PL intensity for polarization perpendicular to the c-axis (E⊥) is up to four times that of polarization parallel to the c-axis (E∥c) for a-plane InN, and this ratio is up to seven for m-plane InN. The absorption edges of a-plane samples for the two polarizations are separated by 19 meV, with E∥c at the higher energy side. Furthermore, the strain has been analyzed using X-ray diffraction measurements, taking the orthorhombic distortion of the lattice into account. Then the experimental results have been compared with a theoretical calculation of the influence of anisotropic biaxial in-plane strain on the transition energies and relative oscillator strength.

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