Sensing Spin Wave Excitations by Spin Defects in Few-Layer Thick Hexagonal Boron Nitride

Abstract

Optically active spin defects in wide band-gap semiconductors serve as a local sensor of multiple degrees of freedom in a variety of "hard" and "soft" condensed matter systems. Taking advantage of the recent progress on quantum sensing using van der Waals (vdW) quantum materials, here we report direct measurements of spin waves excited in magnetic insulator Y3Fe5O12 (YIG) by boron vacancy $V_B^{-}$ spin defects contained in few-layer thick hexagonal boron nitride nanoflakes. We show that the ferromagnetic resonance and parametric spin excitations can be effectively detected by $V_B^{-}$ spin defects under various experimental conditions through optically detected magnetic resonance measurements. The off-resonant dipole interaction between YIG magnons and $V_B^{-}$ spin defects is mediated by multi-magnon scattering processes, which may find relevant applications in a range of emerging quantum sensing, computing, and metrology technologies. Our results also highlight the opportunities offered by quantum spin defects in layered two-dimensional vdW materials for investigating local spin dynamic behaviors in magnetic solid-state matters.

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Cited by in corpus (13)

• Quantum Optics Applications of Hexagonal Boron Nitride Defects
• Probing Stress and Magnetism at High Pressures with Two-Dimensional Quantum Sensors
• Creation and Microscopic Origins of Single-Photon Emitters in Transition Metal Dichalcogenides and Hexagonal Boron Nitride
• Intrinsic high-fidelity spin polarization of charged vacancies in hexagonal boron nitride
• Coherent Spins in van der Waals Semiconductor GeS2 at Ambient Conditions
• First-principles computational methods for quantum defects in two-dimensional materials: A perspective
• Room-Temperature Electrical Readout of Spin Defects in van der Waals Materials
• Scalable registration of single quantum emitters within solid immersion lenses through femtosecond laser writing
• Systematic characterization of nanoscale $h$-BN quantum sensor spots created by helium-ion microscopy
• Isofrequency spin-wave imaging using color center magnetometry for magnon spintronics
• A charge transfer mechanism for optically addressable solid-state spin pairs
• Systematic investigation of dynamic nuclear polarization with boron vacancy in hexagonal boron nitride
• Real-space chirality from crystalline topological defects in the Kitaev spin liquid