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Apparent Zero-Momentum Signals from Magnon--Magnon Interference in Near-Field Spin-Wave Imaging
Julien Berthomier, Romain Lebrun, Vincent Cros +3
Spatially resolved measurements of coherent waves are commonly read as direct maps of the underlying eigenmode spectrum. We show that this interpretation fails in near-field imagin…
Reprogrammable magnonic logic in a multiferroic heterostructure via magnetoelectric coupling
Ping Che, Amr Abdelsamie, Ádám Papp +14
The realization of fully reconfigurable, voltage-controlled, and programmable on-chip magnonic devices is essential to fully harness the potential of spin waves for signal processi…
Phonon-tunable THz magnonic emission in multiferroic heterostructures
Sylvain Massabeau, Amr Abdelsamie, Florian Godel +13
Collective excitations such as magnons and polar phonons provide natural access to the terahertz (THz) regime, but efficient generation and tunability remain elusive. Multiferroic…
Minimizing sensor-sample distances in scanning nitrogen-vacancy magnetometry
Zhewen Xu, Marius L. Palm, William S. Huxter +10
Scanning magnetometry with nitrogen-vacancy (NV) centers in diamond has led to significant advances in the sensitive imaging of magnetic systems. The spatial resolution of the tech…
Terahertz antiferromagnetic dynamics induced by ultrafast spin currents
Sanjay René, Artem Levchuk, Amr Abdelsamie +10
Insulating antiferromagnets are anticipated as the main protagonists of ultrafast spintronics, with their intrinsic terahertz dynamics and their abililty to transport spin informat…
X-ray holography of skyrmionic cocoons in aperiodic magnetic multilayers
M. Grelier, R. Battistelli, H. Popescu +9
The development and characterization of three-dimensional (3D) topological magnetic textures has become an important topic in modern magnetism both for fundamental and technologica…
Voltage-based magnetization switching and reading in magnetoelectric spin-orbit nanodevices
Diogo C. Vaz, Chia-Ching Lin, John J. Plombon +20
As CMOS technologies face challenges in dimensional and voltage scaling, the demand for novel logic devices has never been greater, with spin-based devices offering scaling potenti…
Three-dimensional skyrmionic cocoons in magnetic multilayers
Matthieu Grelier, Florian Godel, Aymeric Vecchiola +5
Three-dimensional (3D) topological spin textures emerge as promising quasi-particles for encoding information in future spintronic devices. The third dimension provides more mallea…
Resonant dynamics of skyrmion lattices in thin film multilayers: Localised modes and spin wave emission
Titiksha Srivastava, Yanis Sassi, Fernando Ajejas +9
The spectral signatures of magnetic skyrmions under microwave field excitation are of fundamental interest and can be an asset for high frequency applications. These topological so…
Nanocontact vortex oscillators based on CoMnGe pseudo-spin valves
Jérémy Létang, Claudia de Melo, Charles Guillemard +9
We present an experimental study of vortex dynamics in magnetic nanocontacts based on pseudo spin valves comprising the CoMnGe Heusler compound. The films were grown by molecul…
Tunable stochasticity in an artificial spin network
Dédalo Sanz-Hernández, Maryam Massouras, Nicolas Reyren +9
Metamaterials present the possibility of artificially generating advanced functionalities through engineering of their internal structure. Artificial spin networks, in which a larg…
Imaging non-collinear antiferromagnetic textures via single spin relaxometry
Aurore Finco, Angela Haykal, Rana Tanos +13
Antiferromagnetic materials are promising platforms for next-generation spintronics owing to their fast dynamics and high robustness against parasitic magnetic fields. However, nan…
Pattern generation and symbolic dynamics in a nanocontact vortex oscillator
Myoung-Woo Yoo, Damien Rontani, Jérémy Létang +6
Harnessing chaos or intrinsic nonlinear behaviours from dynamical systems is a promising avenue for the development of unconventional information processing technologies. However,…
Modulation and phase-locking in nanocontact vortex oscillators
Jérémy Létang, Sébastien Petit-Watelot, Myoung-Woo Yoo +4
We have conducted experiments to probe how the dynamics of nanocontact vortex oscillators can be modulated by an external signal. We explore the phase-locking properties in both th…
Chaos in Magnetic Nanocontact Vortex Oscillators
Thibaut Devolder, Damien Rontani, Sébastien Petit-Watelot +10
We present an experimental study of spin-torque driven vortex self-oscillations in magnetic nanocontacts. We find that above a certain threshold in applied currents, the vortex gyr…
Room-temperature current-induced generation and motion of sub-100nm skyrmions
William Legrand, Davide Maccariello, Nicolas Reyren +7
Magnetic skyrmions are nanoscale windings of the spin configuration that hold great promise for technology due to their topology-related properties and extremely reduced sizes. Aft…
A Dzyaloshinskii-Moriya Anisotropy in Nanomagnets with in-plane Magnetization
M. Cubukcu, J. Sampaio, K. Bouzehouane +4
We report on a new source of in-plane anisotropy in nanomagnets due to the presence of Dzyaloshinskii-Moriya interaction (DMI). This anisotropy depends on the shape of the magnet,…
Anisotropic magneto-Coulomb effect versus spin accumulation in a ferromagnetic single-electron device
A. Bernand-Mantel, P. Seneor, K. Bouzehouane +4
We investigate the magneto-transport characteristics of nanospintronics single-electron devices. The devices consist of single non-magnetic nano-objects (nanometer size nanoparticl…
Nanolithography based on real-time electrically-controlled indentation with an atomic force microscope for nanocontacts elaboration
K. Bouzehouane, S. Fusil, M. Bibes +5
We report on the fabrication of nanocontacts by indentation of an ultrathin insulating photoresist layer deposited on various types of conductive structures. A modified atomic forc…