Wideband wide-field imaging of spin-wave propagation using diamond quantum sensors

Abstract

Imaging spin-wave propagation in magnetic materials in a wide frequency range is crucial for understanding and applying spin-wave dynamics. Recently, nitrogen-vacancy (NV) centers in diamond have attracted attention as sensors capable of quantitatively measuring the amplitude and phase of coherent spin waves. However, the conventional sensing protocol has been limited to detecting spin waves whose frequencies match the resonance frequency of the NV spins. We demonstrate that by utilizing the AC Zeeman effect, it is possible to image spin waves propagating in a yttrium iron garnet (YIG) thin film over a wide frequency range up to a maximum detuning of 567 MHz without changing the external magnetic field. Our results expand the applicability of NV centers for spin-wave sensing and pave the way for quantitative investigations of the dynamics in various magnetic materials, such as metallic ferromagnets and van der Waals magnets.

19 pages, 17 figures

References in corpus (11)

• Tackling Systematic Errors in Quantum Logic Gates with Composite Rotations
• Assessment of Rydberg Atoms for Wideband Electric Field Sensing
• Simultaneous Use of Cs and Rb Rydberg Atoms for Independent RF Electric Field Measurements via Electromagnetically Induced Transparency
• Chiral excitation of spin waves in ferromagnetic films
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• Interplay between nonlinear spectral shift and nonlinear damping of spin waves in ultrathin YIG waveguides
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• Demonstration of highly-sensitive wideband microwave sensing using ensemble nitrogen-vacancy centers
• Wideband Coherent Microwave Conversion via Magnon Nonlinearity in Hybrid Quantum System
• Spin Hall magnetoresistance in Pt/Y${}_3$Fe${}_5$O${}_{12}$ bilayers grown on Si and Gd${}_3$Ga${}_5$O${}_{12}$ substrates

Cited by in corpus (4)

• Isofrequency spin-wave imaging using color center magnetometry for magnon spintronics
• Quantitative imaging of nonlinear spin-wave propagation using diamond quantum sensors
• Robust gigahertz-range ac magnetometry with an ensemble of NV centers in diamond using concatenated continuous dynamical decoupling
• Imaging of microwave magnetic field orientation using continuous-wave experiments on nitrogen-vacancy centers in diamond