Signatures of canted antiferromagnetism in infinite-layer nickelates studied by x-ray magnetic dichroism
We report an experimental study of the magnetic properties of infinite-layer ${\mathrm{Nd}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{NiO}}_{2}$ ($x=0$ and 0.2) thin films by x-ray magnetic circular dichroism (XMCD) at Ni ${L}_{3,2}$ and Nd ${M}_{5,4}$ edges. We show the presence of a field induced out-of-plane ${\mathrm{Ni}}^{1+}$ spin moment, reaching values of $0.25\phantom{\rule{4pt}{0ex}}{\textmu{}}_{B}/\mathrm{Ni}$ at 9 T in the case of superconducting ${\mathrm{Nd}}_{0.8}{\mathrm{Sr}}_{0.2}{\mathrm{NiO}}_{2}$. The magnetic field and temperature dependencies of the Ni ${L}_{3,2}$ XMCD data can be explained by an out-of-plane canting of in-plane anti-ferromagnetically correlated ${\mathrm{Ni}}^{1+}$ spins. The canting is most likely attributed to the symmetry lowering of the ${\mathrm{NiO}}_{2}$ planes, observed via four-dimensional scanning transmission electron microscopy, which can trigger a Dzyaloshinskii-Moriya interaction among the ${\mathrm{Ni}}^{1+}$ spins.
Authors
- M. Salluzzo (ORCID: https://orcid.org/0000-0001-8372-6963)
- Aravind Raji (ORCID: https://orcid.org/0000-0002-7643-2358)
- N. Viart (ORCID: https://orcid.org/0000-0002-7851-017X)
- Christophe Lefèvre (ORCID: https://orcid.org/0000-0002-2962-3426)
- Alexandre Gloter (ORCID: https://orcid.org/0000-0002-4813-3799)
- Yu Chen (ORCID: https://orcid.org/0000-0003-1651-3698)
- Guillaume Krieger (ORCID: https://orcid.org/0000-0002-6787-8251)
- G. Ghiringhelli (ORCID: https://orcid.org/0000-0003-0867-7748)
- Pâmella Vasconcelos Borges Pinho (ORCID: https://orcid.org/0000-0001-7725-2124)
- Martando Rath (ORCID: https://orcid.org/0000-0002-6736-6889)
- Hoshang Sahib (ORCID: https://orcid.org/0000-0001-6841-7759)
- Daniele Preziosi (ORCID: https://orcid.org/0000-0002-6608-7036)
- F. Rosa (ORCID: https://orcid.org/0009-0000-9570-5289)
Institutions
- Laboratoire de physique des Solides (FR)
- Synchrotron soleil (FR)
- Elkhorn Slough Foundation (US)
- Politecnico di Milano (IT)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2024-11-04
- DOI
- https://doi.org/10.1103/physrevb.110.195110
- Citations
- 5
- Primary Topic
- Magnetic properties of thin films
- Type
- article
- Field-Weighted Citation Impact
- 1.69
Funders
- Agence Nationale de la Recherche
- European Synchrotron Radiation Facility
- Institut National de la Santé et de la Recherche Médicale
- Université de Strasbourg
- Centre National de la Recherche Scientifique