Reflection of electrons from a domain wall in magnetic nanojunctions

Details Reflection of electrons from a domain wall in magnetic nanojunctions Reflection of electrons from a domain wall in magnetic nanojunctions

2003-07-31

arxiv.org/abs/cond-mat/0307765v1

Physics

Condensed Matter

Materials Science

7 pages, 4 figures

Scientific paper

10.1103/PhysRevB.68.104434

Electronic transport through thin and laterally constrained domain walls in ferromagnetic nanojunctions is analyzed theoretically. The description is formulated in the basis of scattering states. The resistance of the domain wall is calculated in the regime of strong electron reflection from the wall. It is shown that the corresponding magnetoresistance can be large, which is in a qualitative agreement with recent experimental observations. We also calculate the spin current flowing through the wall and the spin polarization of electron gas due to reflections from the domain wall.

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