Comments on `Rashba precession in quantum wire with interaction'

Details Comments on `Rashba precession in quantum wire with interaction' Comments on `Rashba precession in quantum wire with interaction'

2003-06-02

arxiv.org/abs/cond-mat/0306019v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

2 pages

Scientific paper

In a recent Rapid Communication (Phys. Rev. B {\bf 63}, 121210(R) (2001)), Ha\"usler showed that the interaction between electrons in quantum wires may enhance the persistent spin current arising from Rashba spin-orbital coupling. In this Comments, we would like to point out that this 'enhancement' comes from a misunderstanding to the boosting persistent current in the Luttinger liquid theory. A correct calculation will not give such an enhancement of the persistent spin current. Meanwhile, we provide a Luttinger liquid theory with Rashba spin-orbital interaction by bosonization, which may show how the Rashba precession is in a Luttinger liquid.

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