Multi-Angle Reconstruction of Domain Morphology with All-Optical Diamond Magnetometry

• URL: http://arxiv.org/abs/2101.10331v1
• Date: Mon, 25 Jan 2021 19:00:01 GMT
• Title: Multi-Angle Reconstruction of Domain Morphology with All-Optical Diamond Magnetometry
• Authors: Lucio Stefan, Anthony K. C. Tan, Baptiste Vindolet, Michael H\"ogen, Dickson Thian, Hang Khume Tan, Lo\"ic Rondin, Helena S. Knowles, Jean-Fran\c{c}ois Roch, Anjan Soumyanarayanan, Mete Atat\"ure
• Abstract summary: We introduce a multi-angle reconstruction technique (MARe) that captures the full nanoscale domain morphology in all magnetic-field regimes. Our approach brings non-invasive nanoscale magnetic field imaging capability to the study of a wider pool of magnetic materials and phenomena.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Scanning diamond magnetometers based on the optically detected magnetic resonance of the nitrogen-vacancy centre offer very high sensitivity and non-invasive imaging capabilities when the stray fields emanating from ultrathin magnetic materials are sufficiently low (< 10 mT). Beyond this low-field regime, the optical signal quenches and a quantitative measurement is challenging. While the field-dependent NV photoluminescence can still provide qualitative information on magnetic morphology, this operation regime remains unexplored particularly for surface magnetisation larger than $\sim$ 3 mA. Here, we introduce a multi-angle reconstruction technique (MARe) that captures the full nanoscale domain morphology in all magnetic-field regimes leading to NV photoluminescence quench. To demonstrate this, we use [Ir/Co/Pt]$_{14}$ multilayer films with surface magnetisation an order of magnitude larger than previous reports. Our approach brings non-invasive nanoscale magnetic field imaging capability to the study of a wider pool of magnetic materials and phenomena.

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