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- W1974862275 abstract "We study a magnetic impurity embedded in a correlated electron system using the density-matrix renormalization group method. The correlated electron system is described by the one-dimensional Hubbard model. At half filling, we confirm that the binding energy of the singlet bound state increases exponentially in the weak-coupling regime and decreases inversely proportional to the correlation in the strong-coupling regime. The spin-spin correlation shows an exponential decay with distance from the impurity site. The correlation length becomes smaller with increasing the correlation strength. We find discontinuous reduction of the binding energy and of spin-spin correlations with hole doping. The binding energy is reduced by hole doping; however, it remains of the same order of magnitude as for the half-filled case." @default.
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- W1974862275 date "2007-07-18" @default.
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- W1974862275 title "Single magnetic impurity in a correlated electron system: Density-matrix renormalization group study" @default.
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- W1974862275 doi "https://doi.org/10.1103/physrevb.76.035112" @default.
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