Persistent spin and charge currents and magnification effects in open ring conductors subject to Rashba coupling

Details Persistent spin and charge currents and magnification effects in open ring conductors subject to Rashba coupling Persistent spin and charge currents and magnification effects in open ring conductors subject to Rashba coupling

2007-01-18

arxiv.org/abs/cond-mat/0701453v1

Phys.Rev.B, 75, 073306 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 5 figures, to appear in PRB

Scientific paper

10.1103/PhysRevB.75.073306

We analyze the effect of Rashba spin-orbit coupling and of a local tunnel barrier on the persistent spin and charge currents in a one-dimensional conducting Aharonov-Bohm (AB) ring symmetrically coupled to two leads. First, as an important consequence of the spin-splitting, it is found that a persistent spin current can be induced which is not simply proportional to the charge current. Second, a magnification effect of the persistent spin current is shown when one tunes the Fermi energy near the Fano-type antiresonances of the total transmission coefficient governed by the tunnel barrier strength. As an unambiguous signature of spin-orbit coupling we also show the possibility to produce a persistent pure spin current at the interference zeros of the transmittance. This widens the possibilities of employing mesoscopic conducting rings in phase-coherent spintronics applications.

Affiliated with

Also associated with

No associations

Rating

Persistent spin and charge currents and magnification effects in open ring conductors subject to Rashba coupling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Persistent spin and charge currents and magnification effects in open ring conductors subject to Rashba coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Persistent spin and charge currents and magnification effects in open ring conductors subject to Rashba coupling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-261050