Nitrogen-vacancy magnetometry of CrSBr by diamond membrane transfer

Abstract

Magnetic imaging using nitrogen-vacancy (NV) spins in diamonds is a powerful technique for acquiring quantitative information about sub-micron scale magnetic order. A major challenge for its application in the research on two-dimensional (2D) magnets is the positioning of the NV centers at a well-defined, nanoscale distance to the target material required for detecting the small magnetic fields generated by magnetic monolayers. Here, we develop a diamond 'dry-transfer' technique, akin to the state-of-the-art 2D-materials assembly methods, and use it to place a diamond micro-membrane in direct contact with the 2D interlayer antiferromagnet CrSBr. We harness the resulting NV-sample proximity to spatially resolve the magnetic stray fields generated by the CrSBr, present only where the CrSBr thickness changes by an odd number of layers. From the magnetic stray field of a single uncompensated ferromagnetic layer in the CrSBr, we extract a monolayer magnetization of $M_{\mathrm{CSB}}$ = 0.46(2) T, without the need for exfoliation of monolayer crystals or applying large external magnetic fields. The ability to deterministically place NV-ensemble sensors into contact with target materials and detect ferromagnetic monolayer magnetizations paves the way for quantitative analysis of a wide range of 2D magnets assembled on arbitrary target substrates.

References in corpus (34)

• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Magnetic 2D materials and heterostructures
• Two-Dimensional Itinerant Ising Ferromagnetism in Atomically thin Fe3GeTe2
• Magnetometry with nitrogen-vacancy defects in diamond
• Giant Tunneling Magnetoresistance in Spin-Filter van der Waals Heterostructures
• Probing magnetism in 2D van der Waals crystalline insulators via electron tunneling
• Electric-field switching of two-dimensional van der Waals magnets
• A robust, scanning quantum system for nanoscale sensing and imaging
• Probing condensed matter physics with magnetometry based on nitrogen-vacancy centres in diamond
• Probing magnetism in 2D materials at the nanoscale with single spin microscopy
• Giant and nonreciprocal second harmonic generation from layered antiferromagnetism in bilayer CrI3
• Tunneling spin valves based on Fe${}_3$GeTe${}_2$/hBN/Fe${}_3$GeTe${}_2$ van der Waals heterostructures
• Magnetic Order and Symmetry in the 2D Semiconductor CrSBr
• Fast pick up technique for high quality heterostructures of bilayer graphene and hexagonal boron nitride
• Layered Antiferromagnetism Induces Large Negative Magnetoresistance in the van der Waals Semiconductor CrSBr
• Chip-scale nanofabrication of single spins and spin arrays in diamond
• Linear magneto-electric phase in ultrathin MnPS${}_3$ probed by optical second harmonic generation
• Magnetic resonance imaging of spin-wave transport and interference in a magnetic insulator
• Coexistence of Magnetic Orders in Two-Dimensional Magnet CrI${}_3$
• Technical Review: Imaging weak magnetic field patterns on the nanometer-scale and its application to 2D materials
• Nanoscale imaging of equilibrium quantum Hall edge currents and of the magnetic monopole response in graphene
• Imaging domain reversal in an ultrathin van der Waals ferromagnet
• Quantum sensing and imaging of spin-orbit-torque-driven spin dynamics in noncollinear antiferromagnet Mn3Sn
• Widefield imaging of superconductor vortices with electron spins in diamond
• Visualizing Atomically-Layered Magnetism in CrSBr
• Characterization of room-temperature in-plane magnetization in thin flakes of CrTe${}_2$ with a single spin magnetometer
• Scanning nitrogen-vacancy magnetometry down to 350mK
• Revealing room temperature ferromagnetism in exfoliated Fe${}_5$GeTe${}_2$ flakes with quantum magnetic imaging
• Above-room-temperature ferromagnetism in ultrathin van der Waals magnet
• Robust nano-fabrication of an integrated platform for spin control in a tunable microcavity
• Towards fully two-dimensional spintronic devices
• Varied magnetic phases in a van der Waals easy-plane antiferromagnet revealed by nitrogen-vacancy center microscopy
• Imaging current control of magnetization in Fe${}_3$GeTe${}_2$ with a widefield nitrogen-vacancy microscope

Cited by in corpus (10)

• Nanoscale magnetism and magnetic phase transitions in atomically thin CrSBr
• Roadmap on Quantum Magnetic Materials
• Fundamentals and applications of Van der Waals magnets in magnon spintronics
• Towards high spatial resolution magnetic imaging with a compact practical quantum diamond microscope
• Ferromagnetism above 200 K in organic-ion intercalated CrSBr
• Twist Engineering of Anisotropic Excitonic and Optical Properties of a Two-Dimensional Magnetic Semiconductor
• Spin waves in the bilayer van der Waals magnet CrSBr
• Investigations of optical aberration on quantum diamond microscopy toward high spatial resolution and sensitivity
• Creation of Depth-Confined, Shallow Nitrogen-Vacancy Centers in Diamond With Tunable Density
• Laser-cut Patterned, Micrometer-thin Diamond Membranes with Coherent Color Centers for Open Microcavities