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- W2074964976 abstract "Coulomb oscillation and phase shift are examined numerically through semiconductor quantum dots in a magnetic field. A realistic shape of the quantum dot, tunnel barriers and leads is modeled using a quasi-one-dimensional tight-binding model with smooth potential barriers. In the absence of magnetic field, we obtain a peak structure of the conductance as a function of gate voltage Vg (Coulomb oscillation) with a sequence of abrupt change of the transmission phase, so-called phase lapse. This agrees with experimental results. The magnetic field removes the phase lapse. The phase shift changes continuously, either increases or decreases by almost π with an increase in Vg, reflecting complex wavefunctions at the Fermi level." @default.
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- W2074964976 date "2009-02-01" @default.
- W2074964976 modified "2023-10-16" @default.
- W2074964976 title "Numerical study of Coulomb oscillation and phase shift through quantum dots in a magnetic field" @default.
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- W2074964976 doi "https://doi.org/10.1088/1742-6596/150/2/022028" @default.
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