Effect of charge-spin separation on the conductance through interacting low-dimensional rings

Julián Rincón, K. Hallberg, A. A. Aligia

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We calculate the conductance through Aharonov-Bohm chain and ladder rings pierced by a magnetic flux which couples with the charge degrees of freedom. The system is weakly coupled to two leads and contains strongly interacting electrons modeled by the prototypical t - J and Hubbard models. For a wide range of parameters we observe characteristic dips in the conductance as a function of magnetic flux which are a signature of spin and charge separation. We also show how the dips evolve when the parameters of the models depart from the ideal case of total spin-charge separation. The ladder ring can be mapped onto an effective model for large anisotropy which can be easily analyzed. These results open the possibility of observing this peculiar many-body phenomenon in anisotropic ladder systems and in real nanoscopic devices.

Original languageEnglish (US)
Pages (from-to)3147-3150
Number of pages4
JournalPhysica B: Condensed Matter
Issue number19
StatePublished - Oct 15 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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