Ferromagnetic dynamics detected via one- and two-magnon NV relaxometry

  title={Ferromagnetic dynamics detected via one- and two-magnon NV relaxometry},
  author={Brendan A McCullian and Ahmed M. Thabt and Benjamin A. Gray and Alex L. Melendez and M Wolf and Vladimir L. Safonov and Denis V. Pelekhov and Vidya Praveen Bhallamudi and Michael R. Page and P. Chris Hammel},
  journal={arXiv: Mesoscale and Nanoscale Physics},
The NV center in diamond has proven to be a powerful tool for locally characterizing the magnetic response of microwave excited ferromagnets. To date, this has been limited by the requirement that the FMR excitation frequency be less than the NV spin resonance frequency. Here we report NV relaxometry based on a two-magnon Raman-like process, enabling detection of FMR at frequencies higher than the NV frequency. For high microwave drive powers, we observe an unexpected field-shift of the NV… 

Imaging and phase-locking of non-linear spin waves

Non-linear processes are a key feature in the emerging field of spin-wave based information processing and allow to convert uniform spin-wave excitations into propagating modes at different

Magnetic-field-dependent stimulated emission from nitrogen-vacancy centers in diamond

Negatively charged nitrogen-vacancy (NV) centers in diamond are promising magnetic field quantum sensors. Laser threshold magnetometry theory predicts improved NV center ensemble sensitivity via

Robust Spin Relaxometry with Fast Adaptive Bayesian Estimation

Spin relaxometry with nitrogen-vacancy (N- V ) centers in diamond offers a spectrally selective, atom-ically localized, and calibrated measurement of microwave-frequency magnetic noise, presenting a

Wide field imaging of van der Waals ferromagnet Fe3GeTe2 by spin defects in hexagonal boron nitride

Emergent color centers with accessible spins hosted by van der Waals materials have attracted substantial interest in recent years due to their significant potential for implementing transformative

Quantum Imaging of Magnetic Phase Transitions and Spin Fluctuations in Intrinsic Magnetic Topological Nanoflakes.

Topological materials featuring exotic band structures, unconventional current flow patterns, and emergent organizing principles offer attractive platforms for the development of next-generation

Flavors of magnetic noise in quantum materials

The complexity of electronic band structures in quantum materials offers new charge-neutral degrees of freedom stable for transport, a promising example being the valley (axial) degree of freedom in

Frequency multiplication by collective nanoscale spin-wave dynamics

Frequency multiplication is a process in modern electronics in which harmonics of the input frequency are generated in nonlinear electronic circuits. Devices based on the propagation and interaction

Magnetic field and angle-dependent photoluminescence of a fiber-coupled nitrogen vacancy rich diamond

Here, we investigate the magnetic field dependent photoluminescence (PL) of a fiber-coupled diamond single crystal with a high density of nitrogen vacancy (NV) centers. Angle-dependent magnetic field

High-Sensitivity, High-Resolution Detection of Reactive Oxygen Species Concentration Using NV Centers

Nitrogen-vacancy (NV) color centers in diamond have been demonstrated as useful magnetic sensors, in particular for measuring spin fluctuations, achieving high sensitivity and spatial resolution.

Spin-wave localization and guiding by magnon band structure engineering in yttrium iron garnet

In spintronics the propagation of spin-wave excitations in magnetically ordered materials can also be used to transport and process information. One of the most popular materials in this regard is



Broadband electron paramagnetic resonance spectroscopy in diverse field conditions using optically detected nitrogen-vacancy centers in diamond

Paramagnetic magnetic resonance, a powerful technique for characterizing and identifying chemical targets, is increasingly used for imaging; however, low spin polarization at room temperature and

Spin-torque oscillation in a magnetic insulator probed by a single-spin sensor

Coherent, self-sustained oscillation of magnetization in spin-torque oscillators (STOs) is a promising source for on-chip, nanoscale generation of microwave magnetic fields. Such fields could be used

Magnetic-field-dependent photodynamics of single NV defects in diamond: an application to qualitative all-optical magnetic imaging

Magnetometry and magnetic imaging with nitrogen–vacancy (NV) defects in diamond rely on the optical detection of electron spin resonance (ESR). However, this technique is inherently limited to

Off-resonant manipulation of spins in diamond via precessing magnetization of a proximal ferromagnet

We report the manipulation of nitrogen vacancy (NV) spins in diamond when nearby ferrimagnetic insulator, yttrium iron garnet, is driven into precession. The change in NV spin polarization, as

Spatially resolved detection of complex ferromagnetic dynamics using optically detected nitrogen-vacancy spins

We demonstrate optical detection of a broad spectrum of ferromagnetic excitations using nitrogen-vacancy (NV) centers in an ensemble of nanodiamonds. Our recently developed approach exploits a

Magnetometry with nitrogen-vacancy defects in diamond

The physical principles that allow for magnetic field detection with NV centres are presented and first applications of NV magnetometers that have been demonstrated in the context of nano magnetism, mesoscopic physics and the life sciences are discussed.

Voltage-driven, local, and efficient excitation of nitrogen-vacancy centers in diamond

This work demonstrates a new pathway that combine acoustics and magnonics that enables highly energy-efficient and local excitation of NV centers without the need for any external RF excitation and, thus, could lead to completely integrated, on-chip, atomic sensors.

Quantum-Impurity Relaxometry of Magnetization Dynamics.

It is suggested that the quantum-impurity relaxometry is sensitive to dynamic phase transitions, such as magnon condensation, and can be deployed to detect signatures of the associated coherent spin dynamics, both in ferromagnetic and antiferromagnetic systems.

Control and local measurement of the spin chemical potential in a magnetic insulator

Here, single-spin magnetometry is introduced as a generic platform for nonperturbative, nanoscale characterization of spin chemical potentials and is experimentally used to investigate magnons in a magnetic insulator, finding that the magnon chemical potential can be controlled by driving the system's ferromagnetic resonance.