Quantum spin pumping with adiabatically modulated magnetic barrier's
Benjamin, Ronald ; Benjamin, Colin
arXiv, 0303176 / Harvested from arXiv
Text on arXiv
A quantum pump device involving magnetic barriers produced by the deposition of ferro magnetic stripes on hetero-structure's is investigated. The device for dc- transport does not provide spin-polarized currents, but in the adiabatic regime, when one modulates two independent parameters of this device, spin-up and spin-down electrons are driven in opposite directions, with the net result being that a finite net spin current is transported with negligible charge current. We also analyze our proposed device for inelastic-scattering and spin-orbit scattering. Strong spin-orbit scattering and more so inelastic scattering have a somewhat detrimental effect on spin/charge ratio especially in the strong pumping regime. Further we show our pump to be almost noiseless, implying an optimal quantum spin pump.
Publié le : 2003-03-29
Classification:  Quantum Physics,  Condensed Matter - Mesoscale and Nanoscale Physics,  Mathematical Physics,  Physics - Popular Physics 
@article{0303176,
     author = {Benjamin, Ronald and Benjamin, Colin},
     title = {Quantum spin pumping with adiabatically modulated magnetic barrier's},
     journal = {arXiv},
     volume = {2003},
     number = {0},
     year = {2003},
     language = {en},
     url = {http://dml.mathdoc.fr/item/0303176}
}

Benjamin, Ronald; Benjamin, Colin. Quantum spin pumping with adiabatically modulated magnetic barrier's. arXiv, Tome 2003 (2003) no. 0, . http://gdmltest.u-ga.fr/item/0303176/