標題: Spin characteristics of excitonic absorption in multiply charged quantum dots
作者: Cheng, Shun-Jen
電子物理學系
Department of Electrophysics
公開日期: 1-Aug-2007
摘要: The excitonic absorption spectra of negatively charged self-assembled quantum dots as a function of resident electron number (N-e=0-5) are theoretically studied using the configuration interaction method. Spin Pauli blockade, Coulomb (exchange and correlation) interactions, and symmetry of dot shape are identified as the three main underlying mechanisms, sensitively depending on N-e, in the spin characteristic spectra. In particular, we predict that polarized absorption in triply charged dots exhibits anomalous spin-dependent features, resulting from the intrinsic correlations in charged exciton X-3.
URI: http://dx.doi.org/10.1103/PhysRevB.76.075329
http://hdl.handle.net/11536/10517
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.76.075329
期刊: PHYSICAL REVIEW B
Volume: 76
Issue: 7
起始頁: 0
結束頁: 0
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