Resonating Hartree-Fock approach for electrons confined in two dimentional square quantum dots

Takuma Okunishi, Yuki Negishi, Masakazu Muraguchi, Kyozaburo Takeda

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    Abstract

    We studied the applicability of the resonating unrestricted Hartree-Fock (res-UHF) approach for configuration interaction (CI) by considering the electronic structure of two electrons confined in a two-dimensional (2D) square quantum dot (SQD). The UHF solutions for the SQD are nonorthogonal mutually but are appropriate for the basis functions for the res-UHF CI calculation because they represent the conceivable electron-spin configurations rationally. Consequently, the res-UHF CI using these UHF non-orthogonal solutions has an advantage for narrowing down the number of employed Slater determinants, although at the expense of the orthogonality among the Slater bases.

    Original languageEnglish
    Article number125002
    JournalJapanese Journal of Applied Physics
    Volume48
    Issue number12
    DOIs
    Publication statusPublished - 2009 Dec

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    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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