info:eu-repo/semantics/article
Features of spin-charge separation in the equilibrium conductance through finite rings
Fecha
2009-01Registro en:
Jimenez Rincon, Jose Julian; Aligia, Armando Ángel; Hallberg, Karen Astrid; Features of spin-charge separation in the equilibrium conductance through finite rings; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 79; 3; 1-2009; 35112-35116
0163-1829
1098-0121
CONICET Digital
CONICET
Autor
Jimenez Rincon, Jose Julian
Aligia, Armando Ángel
Hallberg, Karen Astrid
Resumen
We calculate the conductance through rings with few sites L described by the t-J model, threaded by a magnetic flux Φ and weakly coupled to conducting leads at two arbitrary sites. The model can describe a circular array of quantum dots with large charging energy U in comparison with the nearest-neighbor hopping t. We determine analytically the particular values of Φ for which a depression of the transmittance is expected as a consequence of spin-charge separation. We show numerically that the equilibrium conductance at zero temperature is depressed at those particular values of Φ for most systems, in particular at half filling, which might be easier to realize experimentally.