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arXiv · 0805.1962

Giant optical anisotropy in cylindrical self-assembled InAs/GaAs quantum rings

Weiwei Zhang·Zhiqiang Su·Ming Gong·Chuan-Feng Li·Guang-Can Guo·Lixin He
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Abstract

Using a single-particle atomistic pseudopotential method followed by a many-particle configuration interaction method, we investigate the geometry, electronic structure and optical transitions of a self-assembled InAs/GaAs quantum ring (QR), changing its shape continously from a lens-shaped quantum dot (QD) to a nearly one dimensional ring. We find that the biaxial strain in the ring is strongly asymmetric in the plane perpendicular to the QR growth direction, leading to giant optical anisotropy.

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Weiwei Zhang, Zhiqiang Su, Ming Gong, Chuan-Feng Li, Guang-Can Guo, Lixin He. 2008-05-14. Giant optical anisotropy in cylindrical self-assembled InAs/GaAs quantum rings. https://doi.org/10.1209/0295-5075%2F83%2F67004

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