Subatomic movements of a domain wall in the Peierls potential

Details Subatomic movements of a domain wall in the Peierls potential Subatomic movements of a domain wall in the Peierls potential

2003-12-24

arxiv.org/abs/cond-mat/0312631v1

Nature 426, 812-816 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1038/nature02180

Movements of individual domain walls in a ferromagnetic garnet were studied with angstrom resolution. The measurements reveal that domain walls can be locked between adjacent crystallographic planes and propagate by distinct steps matching the lattice periodicity. Domain walls are found to be weakly mobile within valleys of the atomic washboard but become unexpectedly flexible on Peierls ridges, where they can be kept in a bi-stable state by ac magnetic field. We describe the latter observation in terms of a single magnetic kink propagating along a domain wall.

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