Absence of a true long-range orbital order in a two-leg Kondo ladder
arXiv:cond-mat/0608100 · doi:10.1103/PhysRevB.76.014422
Abstract
We investigate, through the density-matrix renormalization group and the Lanczos technique, the possibility of a two-leg Kondo ladder present an incommensurate orbital order. Our results indicate a staggered short-range orbital order at half-filling. Away from half-filling our data are consistent with an incommensurate quasi-long-range orbital order. We also observed that an interaction between the localized spins enhances the rung-rung current correlations.
arXiv comment7 pages, 6 figures, changed the introduction and added some discussions
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