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Correlation Effects in Quantum Dot Wave Function Imaging

Massimo Rontani·Elisa Molinari
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Abstract

We demonstrate that in semiconductor quantum dots wave functions probed by imaging techniques based on local tunneling spectroscopies like STM show characteristic signatures of electron-electron Coulomb correlation. We predict that such images correspond to ``quasi-particle'' wave functions which cannot be computed by standard mean-field techniques (density functional theory, Hartree-Fock) in the strongly correlated regime corresponding to low electron density. From the configuration-interaction solution of the few-particle problem for prototype dots, we find that quasi-particle wave function images may display signatures of Wigner crystallization.

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Massimo Rontani, Elisa Molinari. 2005-07-29. Correlation Effects in Quantum Dot Wave Function Imaging. https://doi.org/10.1143/jjap.45.1966

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