Past Seminars Seminários Já Decorridos 2010

Manipulation of magnetic domain walls by supercurrents

By: Pedro Sacramento
From: IST, Lisbon
At: Complexo Interdisciplinar, Anfiteatro
[2010-01-20] 12:00

We calculate the spin density, spin current and spin torque due to a spin polarized current on a magnetic domain wall juxtaposed to or inserted in a superconductor. The superconductor is part of a heterostructure of the types NSN or FSF. In general, the spin torque exerted on the domain wall is weaker with respect to a normal metal. However, there are regimes where the torque is enhanced with respect to the normal metal. We also calculate the charge accumulation along the domain wall and show that it affects the charge transport.