Interaction between superconducting vortices and a Bloch wall in ferrite garnet films.
A theoretical model for how Bloch walls occurring in in-plane magnetized ferrite garnet films can serve as efficient magnetic micromanipulators is presented. As an example, the walls' interaction with Abrikosov vortices in a superconductor in close contact with a garnet film is analyzed within the London approximation. The model explains how vortices are attracted to such walls, and excellent quantitative agreement is obtained for the resulting peaked flux profile determined experimentally in NbSe(2) using high-resolution magneto-optical imaging of vortices. In particular, this model, when generalized to include charged magnetic walls, explains the counterintuitive attraction observed between vortices and a Bloch wall of opposite polarity.
Vestgården
J I
JI
Department of Physics and Center for Materials Science and Nanotechnology, University of Oslo, P.O. Box 1048, Blindern, 0316 Oslo, Norway.
Shantsev
D V
DV
Olsen
A A F
AA
Galperin
Y M
YM
Yurchenko
V V
VV
Goa
P E
PE
Johansen
T H
TH