Anisotropic spin stripe domains in bilayer La3Ni2O7
Naman K. Gupta,
Rantong Gong,
Yi Wu,
Mingu Kang,
Christopher T. Parzyck,
Benjamin Z. Gregory,
Noah Costa,
Ronny Sutarto,
Suchismita Sarker,
Andrej Singer,
Darrell G. Schlom,
Kyle M. Shen () and
David G. Hawthorn ()
Additional contact information
Naman K. Gupta: University of Waterloo
Rantong Gong: University of Waterloo
Yi Wu: Cornell University
Mingu Kang: Cornell University
Christopher T. Parzyck: Cornell University
Benjamin Z. Gregory: Cornell University
Noah Costa: University of Waterloo
Ronny Sutarto: Canadian Light Source
Suchismita Sarker: Cornell University
Andrej Singer: Cornell University
Darrell G. Schlom: Cornell University
Kyle M. Shen: Cornell University
David G. Hawthorn: University of Waterloo
Nature Communications, 2025, vol. 16, issue 1, 1-9
Abstract:
Abstract The discovery of superconductivity in La3Ni2O7 under pressure has motivated the investigation of a parent spin density wave (SDW) state, which could provide the underlying pairing interaction. Here, we employ resonant soft x-ray scattering and polarimetry on thin films of bilayer La3Ni2O7 to determine that the magnetic structure of the SDW forms unidirectional diagonal spin stripes with moments lying within the NiO2 plane and perpendicular to QSDW, but without evidence of the strong charge disproportionation typically associated with other nickelates. These stripes form anisotropic domains with shorter correlation lengths perpendicular versus parallel to QSDW, revealing nanoscale rotational and translational symmetry breaking analogous to the cuprate and Fe-based superconductors, with possible Bloch-like antiferromagnetic domain walls separating orthogonal domains.
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-61653-w
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DOI: 10.1038/s41467-025-61653-w
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