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- W1976242011 abstract "We have done a study with small, imperfect Hubbard rings with exact diagonalization. The results for few-electron rings show, that the imperfection, whether localized or not, nearly always decrease, but can also emph{increase} the persistent current, depending on the character of the imperfection and the on-site interaction. The calculations are generally in agreement with more specialized studies. In most cases the electron spin plays an important role." @default.
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- W1976242011 title "Persistent currents in small, imperfect Hubbard rings" @default.
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- W1976242011 doi "https://doi.org/10.1103/physrevb.68.195304" @default.
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