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Type: Artigo de periódico
Title: Correlation exponent K-rho of the one-dimensional Kondo lattice model
Author: Xavier, JC
Miranda, E
Abstract: We present results for the correlation exponent K-rho of the Tomonaga-Luttinger liquid description of the one-dimensional Kondo lattice as a function of conduction-electron density and coupling constant. K-rho is obtained from the first derivative of the Fourier transform of the charge-charge correlation function. We also show that the spin correlation function can only be described in this picture if we include logarithmic corrections, a feature that had been previously overlooked. A consistent description of both charge and spin sectors is then obtained. Finally, we show evidence that the spin sector of the dimerized phase at quarter-filling is gapless.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.70.075110
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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