期刊
PHYSICAL REVIEW LETTERS
卷 84, 期 4, 页码 733-736出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.733
关键词
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New information on the electron-hole wave functions in InAs-GaAs self-assembled quantum dots is deduced from Stark effect spectroscopy. Most unexpectedly it is shown that the hole is localized towards the top of the dot, above the electron, an alignment that is inverted relative to the predictions of all recent calculations. We are able to obtain new information on the structure and composition of buried quantum dots from modeling of the data. We also demonstrate that the excited state transitions arise from lateral quantization and that tuning through the inhomogeneous distribution of dot energies can he achieved by variation of electric field.
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