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Friedel oscillations in the one-dimensional Kondo-lattice model

N. Shibata·K. Ueda·T. Nishino·C. Ishii
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Abstract

The paramagnetic metallic phase of the one-dimensional Kondo lattice model is studied by the density-matrix renormalization- group method. We observe charge and spin Friedel oscillations. They reflect the long range charge-charge and spin-spin correlation functions. The observed oscillations are consistent with a Tomonaga-Luttinger liquid. From the period of the oscillations it is concluded that the Fermi surface is large, including both the conduction electrons and the localized spins, $k_F=π(1+n_c)/2$, where $n_c$ is the density of conduction electrons.

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N. Shibata, K. Ueda, T. Nishino, C. Ishii. 1996-09-19. Friedel oscillations in the one-dimensional Kondo-lattice model. https://doi.org/10.1103/physrevb.54.13495

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