Transport in a spin polarized Luttinger liquid in the presence of a single impurity
Abstract
The conductance for a single impurity in a one dimensional gas with electronelectron interaction and Zeeman splitting $v_F^\uparrow  v_F^\downarrow = \Delta \neq 0$ is considered. We find that for an extented Hubbard model, $\rho_\uparrow^R \rho_\uparrow^L + \rho_\downarrow^R \rho_\downarrow^L$, a Luttinger liquid for spin up and spin down is obtained. As a result the conductances for spin up $G_\uparrow$ and spin down $G_\downarrow$ are not equal. The anisotropy in the conductances $G_\uparrow \neq G_\downarrow$ gives rise to a spin polarized wire.
 Publication:

arXiv eprints
 Pub Date:
 December 2002
 arXiv:
 arXiv:condmat/0212262
 Bibcode:
 2002cond.mat.12262C
 Keywords:

 Condensed Matter  Strongly Correlated Electrons
 EPrint:
 10 pages, 6 figures, accepted for publication by Physics Letters A