Correlation exponent Kρ of the one-dimensional Kondo lattice model -: art. no. 075110

被引：11

作者：

Xavier, JC ^{[1
]}

Miranda, E ^{[1
]}

机构：

[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.70.075110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：075110 / 1

页数：5

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