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arXiv · 1604.02591

Anisotropy of in-plane hole g-factor in CdTe/ZnTe quantum dots

A. Bogucki·T. Smoleński·M. Goryca·T. Kazimierczuk·J. Kobak·W. Pacuski·P. Wojnar·P. Kossacki
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Abstract

Optical studies of a bright exciton provide only limited information about the hole anisotropy in a quantum dot. In this work we present a universal method to study heavy hole anisotropy using a dark exciton in a moderate in-plane magnetic field. By analysis of the linear polarization of the dark exciton photoluminescence we identify both isotropic and anisotropic contributions to the hole g-factor. We employ this method for a number of individual self-assembled CdTe/ZnTe quantum dots, demonstrating a variety of behaviors of in-plane hole g-factor: from almost fully anisotropic to almost isotropic. We conclude that, in general, both contributions play an important role and neither contribution can be neglected.

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A. Bogucki, T. Smoleński, M. Goryca, T. Kazimierczuk, J. Kobak, W. Pacuski, P. Wojnar, P. Kossacki. 2016-04-09. Anisotropy of in-plane hole g-factor in CdTe/ZnTe quantum dots. https://doi.org/10.1103/physrevb.93.235410

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