Topological spin pumps I

Details Topological spin pumps I Topological spin pumps I

2003-11-26

arxiv.org/abs/cond-mat/0311612v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

47 pages, 4 figures; to appear in PRB

Scientific paper

We have established a semiclassical kinetic approach for various spin correlated pumping phenomena incorporating spin rotation in wave functions into transport equations. We employ this technique to study topological pumps and illustrate spin pumping in a few models where various spin configurations or topological motors drive adiabatic pumps. In the Rashba model we find that a topological spin pump is driven by a meron with positive one half skyrmion charge, the size of which can be controlled by external gates or Zeeman fields. In the Dresselhaus model on the other hand, electron spins are pumped out by a negative meron. We examine effects of Zeeman fields on topological spin pumping and responses of fermi seas in various pumps. The phenomena of topological pumping are attributed to topological Stern-Gerlach splitting and occur in a transverse direction along which charge pumping currents either vanish or are negligible. The transport equations established here might also be applied for the studies of anomalous Hall effect and spin Hall effect as demonstrated in one of appendices.

Affiliated with

Also associated with

No associations

Rating

Topological spin pumps I 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 Topological spin pumps I, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Topological spin pumps I will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-518519