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Anisotropy of antiferromagnetic domains in a spin-orbit Mott insulator

Wu, L; Wang, W; Assefa, TA; Suzana, AF; Diao, J; Zhao, H; Cao, G; ... Robinson, IK; + view all (2023) Anisotropy of antiferromagnetic domains in a spin-orbit Mott insulator. Physical Review B , 108 (2) , Article L020403. 10.1103/PhysRevB.108.L020403. Green open access

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Abstract

The temperature-dependent behavior of magnetic domains plays an essential role in the magnetic properties of materials, leading to widespread applications. However, experimental methods to access the three-dimensional (3D) magnetic domain structures are very limited, especially for antiferromagnets. Over the past decades, the spin-orbit Mott insulator iridate Formula Presented has attracted particular attention because of its interesting magnetic structure and analogy to superconducting cuprates. Here, we apply resonant x-ray magnetic Bragg coherent diffraction imaging to track the real-space 3D evolution of antiferromagnetic ordering inside a Formula Presented single crystal as a function of temperature, finding that the antiferromagnetic domain shows anisotropic changes. The anisotropy of the domain shape reveals the underlying anisotropy of the antiferromagnetic coupling strength within Formula Presented. These results demonstrate the high potential significance of 3D domain imaging in magnetism research.

Type: Article
Title: Anisotropy of antiferromagnetic domains in a spin-orbit Mott insulator
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.108.L020403
Publisher version: https://doi.org/10.1103/PhysRevB.108.L020403
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: https://discovery.ucl.ac.uk/id/eprint/10175107
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