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

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

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

5 Citas (Scopus)

Resumen

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.

Idioma originalInglés estadounidense
Páginas (desde-hasta)3147-3150
Número de páginas4
PublicaciónPhysica B: Condensed Matter
Volumen404
N.º19
DOI
EstadoPublicada - oct. 15 2009
Publicado de forma externa

Áreas temáticas de ASJC Scopus

  • Materiales electrónicos, ópticos y magnéticos
  • Física de la materia condensada
  • Ingeniería eléctrica y electrónica

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