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arXiv · 2508.18775

Isofrequency spin-wave imaging using color center magnetometry for magnon spintronics

Samuel Mañas-Valero·Yasmin C. Doedes·Artem Bondarenko·Michael Borst·Samer Kurdi·Thomas Poirier·James H. Edgar·Vincent Jacques·Yaroslav M. Blanter·Toeno van der Sar
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Abstract

Magnon spintronics aims to harness spin waves in magnetic films for information technologies. Color center magnetometry is a promising tool for imaging spin waves, using electronic spins associated with atomic defects in solid-state materials as sensors. However, two main limitations persist: the magnetic fields required for spin-wave control detune the sensor-spin detection frequency, and this frequency is further restricted by the color center nature. Here, we overcome these limitations by decoupling the sensor spins from the spin-wave control fields -selecting color centers with intrinsic anisotropy axes orthogonal to the film magnetization- and by using color centers in diamond and hexagonal boron nitride to operate at complementary frequencies. We demonstrate isofrequency imaging of field-controlled spin waves in a magnetic half-plane and show how intrinsic magnetic anisotropies trigger bistable spin textures that govern spin-wave transport at device edges. Our results establish color center magnetometry as a versatile tool for advancing spin-wave technologies.

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Samuel Mañas-Valero, Yasmin C. Doedes, Artem Bondarenko, Michael Borst, Samer Kurdi, Thomas Poirier, James H. Edgar, Vincent Jacques, Yaroslav M. Blanter, Toeno van der Sar. 2025-08-26. Isofrequency spin-wave imaging using color center magnetometry for magnon spintronics. https://doi.org/10.1038/s41467-025-67056-1

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