Kavli Affiliate: Toeno Van Der Sar
| First 5 Authors: Samuel Mañas-Valero, Samuel Mañas-Valero, , ,
| Summary:
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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