Correlation Effects in Quantum Dot Wave Function Imaging

Details Correlation Effects in Quantum Dot Wave Function Imaging Correlation Effects in Quantum Dot Wave Function Imaging

2005-07-28

arxiv.org/abs/cond-mat/0507688v2

Japanese Journal of Applied Physics 45, 1966 (2006).

Physics

Condensed Matter

Strongly Correlated Electrons

Latex 2e + jjap2 style version 1.0. 4 pages, 3 postscript figures. Submitted to the Japanese Journal of Applied Physics as Pro

Scientific paper

10.1143/JJAP.45.1966

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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