Phys. Rev. B 76, 014422 (2007) [6 pages]Absence of true long-range orbital order in a two-leg Kondo ladderReceived 3 August 2006; revised 11 June 2007; published 16 July 2007 We investigate, through the density-matrix renormalization group and the Lanczos technique, the possibility of a two-leg Kondo ladder presenting an incommensurate orbital order. Our results indicate staggered short-range orbital order at half-filling. Away from half-filling our data are consistent with incommensurate quasi-long-range orbital order. We also observed that an interaction between the localized spins enhances the rung-rung current correlations. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.76.014422
DOI:
10.1103/PhysRevB.76.014422
PACS:
75.10.−b, 71.10.Pm, 75.30.Mb
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