Correlation Effects in Wave Function Mapping of Molecular Beam Epitaxy Grown Quantum Dots

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We investigate correlation effects in the regime of a few electrons in uncapped InAs quantum dots by tunneling spectroscopy and wave function (WF) mapping at high tunneling currents where electron-electron interactions become relevant. Four clearly resolved states are found, whose approximate symmetries are roughly s and p, in order of increasing energy. Because the major axes of the p-like states coincide, the WF sequence is inconsistent with the imaging of independent-electron orbitals. The results are explained in terms of many-body tunneling theory, by comparing measured maps with those calculated by taking correlation effects into account.
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Mesoscale and Nanoscale Physics, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/137794

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0707.4613
 http://arxiv.org/abs/0707.4613
 Nano Letters Vol. 7, No. 9, pages 2701-2706 (2007).
 doi:10.1021/nl071133m

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arXiv