Features of spin-charge separation in the equilibrium conductance through finite rings

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

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number035112
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number3
DOIs
StatePublished - Jan 5 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Features of spin-charge separation in the equilibrium conductance through finite rings'. Together they form a unique fingerprint.

Cite this