Quantum Sensing of Spin Transport Properties of an Antiferromagnetic Insulator

Abstract

Antiferromagnetic insulators (AFIs) are of significant interest due to their potential to develop next-generation spintronic devices. One major effort in this emerging field is to harness AFIs for long-range spin information communication and storage. Here, we report a non-invasive method to optically access the intrinsic spin transport properties of an archetypical AFI α-Fe2O3 via nitrogen-vacancy (NV) quantum spin sensors. By NV relaxometry measurements, we successfully detect the time-dependent fluctuations of the longitudinal spin density of α-Fe2O3. The observed frequency dependence of the NV relaxation rate is in agreement with a theoretical model, from which an intrinsic spin diffusion constant of α-Fe2O3 is experimentally measured in the absence of external spin biases. Our results highlight the significant opportunity offered by NV centers in diagnosing the underlying spin transport properties in a broad range of high-frequency magnetic materials, which are challenging to access by more conventional measurement techniques.

References in corpus (34)

• Antiferromagnetic spintronics
• Quantum Spin Liquids
• Electrical switching of an antiferromagnet
• Magnetometry with nitrogen-vacancy defects in diamond
• Long distance transport of magnon spin information in a magnetic insulator at room temperature
• Electrically controlled long-distance spin transport through an antiferromagnetic insulator
• Probing magnetism in 2D materials at the nanoscale with single spin microscopy
• Antiferromagnetic spin Seebeck Effect
• Antidamping torque-induced switching in biaxial antiferromagnetic insulators
• Subterahertz spin pumping from an insulating antiferromagnet
• Magnon spin transport driven by the magnon chemical potential in a magnetic insulator
• Purely Antiferromagnetic Magnetoelectric Random Access Memory
• Control and Local Measurement of the Spin Chemical Potential in a Magnetic Insulator
• Scanned probe imaging of nanoscale magnetism at cryogenic temperatures with a single-spin quantum sensor
• Spin relaxometry of single nitrogen-vacancy defects in diamond nanocrystals for magnetic noise sensing
• Nanometre-scale probing of spin waves using single electron spins
• Magnon Mediated Electric Current Drag Across a Ferromagnetic Insulator Layer
• Experimental Signatures of Spin Superfluid Ground State in Canted Antiferromagnet Cr2O3 via Nonlocal Spin Transport
• Electrical Switching of Tristate Antiferromagnetic Néel Order in $\alpha$-Fe${}_2$O${}_3$ Epitaxial Films
• Quantum coherence control at near 1000 K
• Long-distance spin-transport across the Morin phase transition up to room temperature in ultra-low damping single crystals of the antiferromagnet α-Fe2O3
• Spin chirality fluctuation in two-dimensional ferromagnets with perpendicular anisotropy
• Long range pure magnon spin diffusion observed in a non-local spin-Seebeck geometry
• Imaging thermal conductivity with nanoscale resolution using a scanning spin probe
• Quantum diamond spectrometer for nanoscale NMR and ESR spectroscopy
• Observation of Antiferromagnetic Magnon Pseudospin Dynamics and the Hanle effect
• Nanoscale Detection of Magnon Excitations with Variable Wavevectors Through a Quantum Spin Sensor
• Quantum-impurity relaxometry of magnetization dynamics
• Ferromagnetic dynamics detected via one- and two-magnon NV relaxometry
• Diagnosing phases of magnetic insulators via noise magnetometry with spin qubits
• Sensing chiral magnetic noise via quantum impurity relaxometry
• Optically Detected Ferromagnetic Resonance in Metallic Ferromagnets via Nitrogen Vacancy Centers in Diamond
• Current-induced fragmentation of antiferromagnetic domains
• Chemical potential of an antiferromagnetic magnon gas

Cited by in corpus (21)

• Wide Field Imaging of van der Waals Ferromagnet Fe3GeTe2 by Spin Defects in Hexagonal Boron Nitride
• Single-molecule Scale Magnetic Resonance Spectroscopy using Nitrogen-Vacancy Centers in Diamond
• Bell-state generation for spin qubits via dissipative coupling
• Machine-learning-enhanced quantum sensors for accurate magnetic field imaging
• Quantum Imaging of Magnetic Phase Transitions and Spin Fluctuations in Intrinsic Magnetic Topological Nanoflakes
• Antiferromagnetic insulatronics: spintronics in insulating 3d metal oxides with antiferromagnetic coupling
• Quantum noise spectroscopy of dynamical critical phenomena
• Roadmap on Quantum Magnetic Materials
• Quantum Sensing of Broadband Spin Dynamics and Magnon Transport in Antiferromagnets
• Solid-state platform for cooperative quantum dynamics driven by correlated emission
• Local noise spectroscopy of Wigner crystals in two-dimensional materials
• A generalized model of magnon kinetics and subgap magnetic noise
• Anatomy of spin wave driven magnetic texture motion via magnonic torques
• Room temperature relaxometry of single nitrogen-vacancy centers in proximity to $\alpha$-RuCl${}_3$ nanoflakes
• Flavors of Magnetic Noise in Quantum Materials
• Engineering long-lived entanglement through dissipation in quantum hybrid solid-state platforms
• Spin-qubit Noise Spectroscopy of Magnetic Berezinskii-Kosterlitz-Thouless Physics
• Detection of Geometric Phases in Spin Waves using Nitrogen-Vacancy Centers
• Ginzburg-Landau theory of spin pumping through an antiferromagnetic layer near the Néel temperature
• Probing GHz Spin Dynamics Across Magnetic Phase Transitions in CrCl3 Nanoflakes Using Nitrogen-Vacancy Microscopy
• Quantum-impurity sensing of altermagnetic order