Friedel oscillations in the one-dimensional Kondo-lattice model

Details Friedel oscillations in the one-dimensional Kondo-lattice model Friedel oscillations in the one-dimensional Kondo-lattice model

1996-08-26

arxiv.org/abs/cond-mat/9608118v2

Phys. Rev. B 54, 13495-13498 (1996)

Physics

Condensed Matter

RevTeX, 4 pages, 4 Postscript figures, to be published in Physical review B

Scientific paper

10.1103/PhysRevB.54.13495

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, $k_F=\pi (1+n_c)/2$, where $n_c$ is the density of conduction electrons.

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