Surface-symmetry-driven Dzyaloshinskii-Moriya interaction and canted ferrimagnetism in collinear magnetoelectric antiferromagnet Cr₂O₃
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"updated": "2023-11-29T10:55:02.287692+00:00",
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"contributors": [
{
"givennames": "Oleksandr",
"affiliations": [
"Helmholtz-Zentrum Dresden-Rossendorf e.V., Institute of Ion Beam Physics and Materials Research, 01328 Dresden, Germany"
],
"email": "o.pylypovskyi@hzdr.de",
"familyname": "Pylypovskyi"
},
{
"givennames": "Sophie",
"affiliations": [
"Materials Theory, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland"
],
"email": "Sophie.weber@mat.ethz.ch",
"familyname": "Weber"
},
{
"givennames": "Pavlo",
"affiliations": [
"Helmholtz-Zentrum Dresden-Rossendorf e.V., Institute of Ion Beam Physics and Materials Research, 01328 Dresden, Germany"
],
"email": "p.makushko@hzdr.de",
"familyname": "Makushko"
},
{
"givennames": "Igor",
"affiliations": [
"Helmholtz-Zentrum Dresden-Rossendorf e.V., Institute of Ion Beam Physics and Materials Research, 01328 Dresden, Germany"
],
"email": "I.veremchuk@hzdr.de",
"familyname": "Veremchuk"
},
{
"givennames": "Nicola",
"affiliations": [
"Materials Theory, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093 Zurich, Switzerland"
],
"email": "nicola.spaldin@mat.ethz.ch",
"familyname": "Spaldin"
},
{
"givennames": "Denys",
"affiliations": [
"Helmholtz-Zentrum Dresden-Rossendorf e.V., Institute of Ion Beam Physics and Materials Research, 01328 Dresden, Germany"
],
"email": "d.makarov@hzdr.de",
"familyname": "Makarov"
}
],
"title": "Surface-symmetry-driven Dzyaloshinskii-Moriya interaction and canted ferrimagnetism in collinear magnetoelectric antiferromagnet Cr\u2082O\u2083",
"_oai": {
"id": "oai:materialscloud.org:1993"
},
"keywords": [
"magnetoelectrics",
"surface magnetization",
"density-functional theory",
"Dzyaloshinskii-Moriya interactions",
"micromagnetics",
"magnetotransport"
],
"publication_date": "Nov 29, 2023, 11:55:02",
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"key": "mplane_3rdlayercant.tar",
"description": "input and relevant output files for determining canting angle of the third layer for the chromia m-plane. The chromium moments in the first layer are held fixed at -0.75 degrees and -0.5 degrees in the second layer.",
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"description": "input and output files for calculating energy as a function of canting-induced magnetization along x when Neel vector is along z (the bulk ground-state Neel-vector directionl) for the m-plane. These are used in the preprint to numerically estimate the D_{xz} contribution the Dzyaloshinskii-Moriya interaction at the m-plane.",
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"references": [
{
"doi": "https://doi.org/10.48550/arXiv.2310.13438",
"citation": "arXiv.2310.13438 (2023)",
"url": "https://arxiv.org/abs/2310.13438",
"type": "Preprint"
}
],
"description": "Antiferromagnets are normally thought of as materials with compensated magnetic sublattices. This adds to their technological advantages but complicates readout of the antiferromagnetic state. We demonstrate theoretically the existence of a Dzyaloshinskii-Moriya interaction (DMI) which is determined by the magnetic symmetry classes of Cr\u2082O\u2083 surfaces with an in-plane magnetic easy axis. The DMI explains a previously predicted out-of-plane magnetization at the nominally compensated surfaces of chromia, leading to a surface-localized canted ferrimagnetism. This is in agreement with magnetotransport measurements and with density functional theory predictions which further allow us to quantify the strength of DMI. The temperature dependence of the transversal resistance for these planes shows distinct behavior in comparison with that of the Cr\u2082O\u2083 plane, which we attribute to the influence of DMI. Our work provides a framework to analyze surface-driven phenomena in antiferromagnets, and motivates the use of nominally compensated chromia surfaces for antiferomagnetic spintronics and magnonics. Here, we provide the data for density functional theory and Monte Carlo calculations. Micromagnetic and experimental data for this joint experiment-theory collaboration are archived separately according to EU regulations.",
"status": "published",
"license": "Creative Commons Attribution 4.0 International",
"conceptrecid": "1992",
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"mcid": "2023.183",
"edited_by": 576,
"id": "1993",
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"license_addendum": null,
"doi": "10.24435/materialscloud:v6-5y"
},
"revision": 4,
"created": "2023-11-28T15:22:40.940449+00:00"
}