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arXiv · 1301.6452

Pinning of a Bloch point by an atomic lattice

Se Kwon Kim·Oleg Tchernyshyov
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Abstract

Bloch points are magnetic topological defects. The discrete nature of a magnetic lattice creates a periodic potential that can pin a Bloch point. The pinning force is of the order of the exchange constant, a few piconewtons in a typical ferromagnet (permalloy). A domain wall containing a Bloch point can have a sizable depinning field in the tens of oersted.

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Se Kwon Kim, Oleg Tchernyshyov. 2013-09-13. Pinning of a Bloch point by an atomic lattice. https://doi.org/10.1103/physrevb.88.174402

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