Switching between Magnetic Bloch and Néel Domain Walls with Anisotropy Modulations

Franke, Kévin JA; Ophus, Colin; Schmid, Andreas K; Marrows, Christopher H

doi:10.1103/PhysRevLett.127.127203

Switching between Magnetic Bloch and Néel Domain Walls with Anisotropy Modulations

Journal Article · Mon Apr 26 00:00:00 EDT 2021 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.127.127203· OSTI ID:1818482

Franke, Kévin JA; Ophus, Colin; Schmid, Andreas K; Marrows, Christopher H

It has been shown previously that the presence of a Dzyaloshinskii-Moriya interaction in perpendicularly magnetized thin films stabilizes N\'eel type domain walls. We demonstrate, using micromagnetic simulations and analytical modeling, that the presence of a uniaxial in-plane magnetic anisotropy can also lead to the formation of N\'eel walls in the absence of a Dzyaloshinskii-Moriya interaction. It is possible to abruptly switch between Bloch and N\'eel walls via a small modulation of both the in-plane, but also the perpendicular magnetic anisotropy. This opens up a route towards electric field control of the domain wall type with small applied voltages through electric field controlled anisotropies.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: European Research Council (ERC); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1818482

Alternate ID(s):: OSTI ID: 1829465

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 127; ISSN 0031-9007

Country of Publication:: United States

Language:: English

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Switching between Magnetic Bloch and Néel Domain Walls with Anisotropy Modulations

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