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15 papers
Reversible Magneto-ionic Modification of Metallic Magnetic Thin Films
Md Golam Hafiz, Hari Babu Vasili, Philippa Shepley +12
Magnetic multilayers with structural inversion asymmetry, perpendicular magnetic anisotropy (PMA), and large Dzyaloshinskii-Moriya interaction (DMI) are widely studied for magnetic…
Chiral damping of magnons
Dae-Yun Kim, Imane Berrai, T. S. Suraj +11
Chiral magnets have garnered significant interest due to the emergence of unique phenomena prohibited in inversion-symmetric magnets. While the equilibrium characteristics of chira…
Multiple magneto-ionic regimes in Ta/CoFeB/HfO
R. Pachat, D. Ourdani, J. W. van der Jagt +11
In Ta/CoFeB/HfO2 stacks a gate voltage drives, in a nonvolatile way, the system from an underoxidized state exhibiting in-plane anisotropy (IPA) to an optimum oxidation level resul…
Current-Driven Skyrmion Dynamics and Drive-Dependent Skyrmion Hall Effect in an Ultrathin Film
Roméo Juge, Soong-Geun Je, Dayane de Souza Chaves +19
Magnetic skyrmions are chiral spin textures that hold great promise as nanoscale information carriers. Since their first observation at room temperature, progress has been made in…
Large voltage tuning of Dzyaloshinskii-Moriya Interaction: a route towards dynamic control of skyrmion chirality
Titiksha Srivastava, Marine Schott, Roméo Juge +14
Electric control of magnetism is a prerequisite for efficient and low power spintronic devices. More specifically, in heavy metal/ ferromagnet/ insulator heterostructures, voltage…
Thickness-dependence of the Dzyaloshinskii-Moriya interaction in Co2FeAl ultrathin films: effects of the annealing temperature and the heavy metal material
M. Belmeguenai, Y. Roussigné, S. M. Chérif +8
Interfacial Dzyaloshinskii-Moriya interaction (iDMI) has been investigated in Co2FeAl (CFA) ultrathin films of various thicknesses (0.8 nm<tCFA<2 nm) grown on Si substrates, using…
Investigation of the interfacial Dzyaloshinskii-Moriya interaction sign in Ir/Co2FeAl systems by Brillouin light scattering
M. Belmeguenai, M. S. Gabor, Y. Roussigné +5
Co2FeAl (CFA) ultrathin films, of various thicknesses (0.9 nm<tCFA<1.8 nm), have been grown by sputtering on Si substrates, using Ir as a buffer layer. The magnetic properties of t…
Interface Dzyaloshinskii-Moriya interaction in the interlayer exchange antiferromagnetic coupled Pt/CoFeB/Ru/CoFeB systems
M. Belmeguenai, H. Bouloussa, Y. Roussigné +6
Interfacial Dzyaloshinskii-Moriya interaction (iDMI) in interlayer exchange coupled (IEC) Pt/CoFeB(1.12 nm)/Ru/CoFeB(1.12 nm) systems have…
Making the Dzyaloshinskii-Moriya interaction visible
A. Hrabec, M. Belmeguenai, A. Stashkevich +4
Brillouin light spectroscopy is a powerful and robust technique for measuring the interfacial Dzyaloshinskii-Moriya interaction in thin films with broken inversion symmetry. Here w…
The interfacial nature of proximity induced magnetism and the Dzyaloshinskii-Moriya interaction at the Pt/Co interface
R. M. Rowan-Robinson, A. A. Stashkevich, Y. Roussigne +6
The Dzyaloshinskii-Moriya interaction (DMI) has been shown to stabilise Neél domain walls in magnetic thin films, allowing high domain wall velocities driven by spin current effect…
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…
Room temperature chiral magnetic skyrmion in ultrathin magnetic nanostructures
Olivier Boulle, Jan Vogel, Hongxin Yang +16
Magnetic skyrmions are chiral spin structures with a whirling configuration. Their topological properties, nanometer size and the fact that they can be moved by small current densi…
Velocity asymmetry of Dzyaloshinskii domain walls in the creep and flow regimes
M. Vanatka, J. -C. Rojas-Sanchez, J. Vogel +3
We have carried out measurements of domain wall dynamics in a Pt/Co/GdOx(t) wedge sample with perpendicular magnetic anisotropy. When driven by an easy-axis field Hz in the presenc…
Non-reciprocity of spin wave propagation induced by the interface Dzyaloshinskii-Moriya interaction in Py/Pt film structures
A. A. Stashkevich, M. Belmeguenai, Y. Roussigné +6
Results of a comprehensive study by means of Brillouin spectroscopy, complemented by Ferromagnetic Resonance characterization, of spin waves (SW) propagating in Py/Pt bi-layers, ch…
Transmission electron microscopy and ferromagnetic resonance investigations of tunnel magnetic junctions using Co2MnGe Heusler alloy as magnetic electrodes
M. Belmeguenai, C. Genevois, F. Zighem +6
HRTEM, nano-beam electronic diffraction, energy dispersive X-rays scanning spectroscopy, Vibrating Sample Magnetometry (VSM) and FerroMagnetic Resonance (FMR) techniques are used i…