Skyrmionic magnetization configurations at chiral magnet/ferromagnet heterostructures
Abstract
We consider magnetization configurations at chiral magnet (CM)/ferromagnet (FM) heterostructures. In the CM, magnetic skyrmions and spin helices emerge due to the Dzyaloshinskii-Moriya interaction, which then penetrate into the adjacent FM. However, because the non-uniform magnetization structures are energetically unfavorable in the FM, the penetrated magnetization structures are deformed, resulting in exotic three-dimensional configurations, such as skyrmion cones, sideways skyrmions, and twisted helices and skyrmions. We discuss the stability of possible magnetization configurations at the CM/FM and CM/FM/CM hybrid structures within the framework of the variational method, and find that various magnetization configurations appear in the ground state, some of which cause nontrivial emergent magnetic field.
Cite
@article{arxiv.1508.07665,
title = {Skyrmionic magnetization configurations at chiral magnet/ferromagnet heterostructures},
author = {Yuki Kawaguchi and Yukio Tanaka and Naoto Nagaosa},
journal= {arXiv preprint arXiv:1508.07665},
year = {2016}
}
Comments
17 pages, 13 figures (including 10 online color figures)