232 citations · 1.2k across the 19 of their papers we have counts for
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Probing the Dzyaloshinskii-Moriya interaction in CoFeB ultrathin films using domain wall creep and Brillouin light spectroscopy
R. Soucaille, M. Belmeguenai, J. Torrejon +7
We have characterized the strength of the interfacial Dyzaloshinskii-Moriya interaction (DMI) in ultrathin perpendicularly magnetized CoFeB/MgO films, grown on different underlayer…
Dynamical influence of vortex-antivortex pairs in magnetic vortex oscillators
Rubén M. Otxoa, Sébastien Petit-Watelot, Mauricio Manfrini +3
We study the magnetization dynamics in a nanocontact magnetic vortex oscillators as function of temperature. Low temperature experiments reveal that the dynamics at low and high cu…
Curved magnonic waveguides based on domain walls
Felipe Garcia-Sanchez, Pablo Borys, Rémy Soucaille +3
The channeling of spin waves with domain walls in ultrathin ferromagnetic films is demonstrated theoretically and through micromagnetics simulations. It is shown that propagating e…
Current driven asymmetric magnetization switching in perpendicularly magnetized CoFeB/MgO heterostructures
Jacob Torrejon, Felipe Garcia-Sanchez, Tomohiro Taniguchi +4
The flow of in-plane current through ultrathin magnetic heterostructures can cause magnetization switching or domain wall nucleation owing to bulk and interfacial effects. Within t…
Breathing modes of confined skyrmions in ultrathin magnetic dots
Joo-Von Kim, Felipe Garcia-Sanchez, Joao Sampaio +3
The dynamics of individual magnetic skyrmions confined in ultrathin film dots is studied theoretically. The systems considered are transition metal ferromagnets possessing perpendi…
Noise-enhanced synchronization of stochastic magnetic oscillators
Nicolas Locatelli, Alice Mizrahi, Artur Accioloy +9
We present an experimental study of phase-locking in a stochastic magnetic oscillator. The system comprises a magnetic tunnel junction with a superparamagnetic free layer, whose ma…
Nonreciprocal spin-wave channeling along textures driven by the Dzyaloshinskii-Moriya interaction
Felipe Garcia-Sanchez, Pablo Borys, Arne Vansteenkiste +2
Ultrathin metallic ferromagnets on substrates with strong spin-orbit coupling can exhibit induced chiral interactions of the Dzyaloshinskii-Moriya (DM) form. For systems with perpe…
Electric field control of domain wall logic in piezoelec-tric/ferromagnetic nanodevices
Na Lei, Thibaut Devolder, Guillaume Agnus +7
Power dissipation is one of the most important factors limiting the future miniaturisation of integrated circuits. The capability of controlling magnetic states with a low voltage…
Frequency shift keying in vortex-based spin torque oscillators
M. Manfrini, T. Devolder, Joo-Von Kim +4
Vortex-based spin-torque oscillators can be made from extended spin valves connected to an electrical nanocontact. We study the implementation of frequency shift keying modulation…
Theory of the power spectrum of spin-torque nanocontact vortex oscillators
Joo-Von Kim, Thibaut Devolder
Spin-transfer torques in magnetic nanocontacts can lead to self-sustained magnetization oscillations that involve large-amplitude gyrotropic vortex motion. This dynamics consists o…
Direct experimental measurement of phase-amplitude coupling in spin torque oscillators
L. Bianchini, S. Cornelissen, Joo-Von Kim +4
We study spin-torque induced oscillations of MgO magnetic tunnel junctions in the time domain. By using the Hilbert transform on the time traces, we obtain for the first time a dir…
Influence of magnetic viscosity on domain wall dynamics under spin-polarized currents
Joo-Von Kim, Capucine Burrowes
We present a theoretical study of the influence of magnetic viscosity on current-driven domain wall dynamics. In particular we examine how domain wall depinning transitions, driven…
Current-driven vortex oscillations in metallic nanocontacts: Zero-field oscillations and training effects
M. van Kampen, L. Lagae, G. Hrkac +4
We present an experimental and theoretical study of the low-field dynamics of current-driven vortex oscillations in nanocontacts based on spin-valve multilayers. These oscillations…
Spin-wave contributions to current-induced domain wall dynamics
Yann Le Maho, Joo Von Kim, Gen Tatara
We examine theoretically the role of spin-waves on current-induced domain wall dynamics in a ferromagnetic wire. At room temperature, we find that an interaction between the domain…
Auto-oscillation threshold, narrow spectral lines, and line jitter in spin-torque oscillators based on MgO magnetic tunnel junctions
T. Devolder, S. Cornelissen, L. Bianchini +5
We demonstrate spin torque induced auto-oscillation in MgO-based magnetic tunnel junctions. At the generation threshold, we observe a strong line narrowing down to 6 MHz at 300K an…