Correlation Effects in Quantum Dot Wave Function Imaging

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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.
Latex 2e + jjap2 style version 1.0. 4 pages, 3 postscript figures. Submitted to the Japanese Journal of Applied Physics as Proceeding of STM05 Conference, Sapporo, Japan, July 3-8, 2005

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Strongly Correlated Electrons, Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/97407

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0507688
 http://arxiv.org/abs/cond-mat/0507688
 Japanese Journal of Applied Physics 45, 1966 (2006).
 doi:10.1143/JJAP.45.1966

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arXiv