Authors:	Barra, Anthony Ross, Andrew Gomonay, Olena Baldrati, Lorenzo Chavez, A. Lebrun, Romain Schneider, J. D. Shirazi, Paymon Wang, Qi Sinova, Jairo Carman, Gregory P. Kläui, Mathias
Title:	Effective strain manipulation of the antiferromagnetic state of polycrystalline NiO A
Online publication date:	9-Aug-2021
Year of first publication:	2021
Language:	english
Abstract:	As a candidate material for applications such as magnetic memory, polycrystalline antiferromagnets offer the same robustness to external magnetic fields, THz spin dynamics, and lack of stray fields as their single crystalline counterparts, but without the limitation of epitaxial growth and lattice matched substrates. Here, we first report the detection of the average Neel vector orientation in polycrystalline NiO via spin Hall magnetoresistance (SMR). Second, by applying strain through a piezo-electric substrate, we reduce the critical magnetic field required to reach a saturation of the SMR signal, indicating a change of the anisotropy. Our results are consistent with polycrystalline NiO exhibiting a positive sign of the in-plane magnetostriction. This method of anisotropy-tuning offers an energy efficient, on-chip alternative to manipulate a polycrystalline antiferromagnet's magnetic state.
DDC:	530 Physik 530 Physics
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-6265
Version:	Accepted version
Publication type:	Zeitschriftenaufsatz
Document type specification:	Scientific article
License:	In Copyright
Information on rights of use:	http://rightsstatements.org/vocab/InC/1.0/
Journal:	Applied physics letters 118 17
Pages or article number:	172408
Publisher:	American Inst. of Physics
Publisher place:	Melville, NY
Issue date:	2021
ISSN:	0003-6951
Publisher URL:	https://doi.org/10.1063/5.0046255
Publisher DOI:	10.1063/5.0046255
Appears in collections:	JGU-Publikationen