Influences of an impurity on the transport properties of one-dimensional antisymmetric spin filter

TL;DR

This paper investigates how an impurity affects spin and charge transport in a one-dimensional antisymmetric spin filter, revealing that spin transport remains unaffected while charge transport behaves like a spinless Luttinger liquid.

Contribution

It provides a theoretical analysis of impurity effects on transport in antisymmetric spin filters using bosonization and Keldysh techniques, contrasting with spinful Luttinger liquids.

Findings

Spin transport is unaffected by impurities.

Charge transport mimics that of spinless Luttinger liquids.

Electron spin orientation depends on wave number.

Abstract

The influences of an impurity on the spin and the charge transport of one-dimensional antisymmetric spin filter are investigated using bosonization and Keldysh formulation and the results are highlighted against those of spinful Luttinger liquids. Due to the dependence of the electron spin orientation on wave number the spin transport is not affected by the impurity, while the charge transport is essentially identical with that of spinless one-dimensional Luttinger liquid.