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41 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…
Diode and selective routing functionalities controlled by geometry in current-induced spin-orbit torque driven magnetic domain wall devices
Elena M. Stetco, Traian Petrisor, Ovidiu A. Pop +3
Research on current-induced domain wall (DW) motion in heavy metal/ferromagnet structures is crucial for advancing memory, logic, and computing devices. Here, we demonstrate that a…
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…
Bulk and interface spin-orbit torques in Pt/Co/MgO thin film structures
M. S. Gabor, M. Belmeguenai, I. M. Miron
We investigate the origin of spin-orbit torques (SOTs) in archetypical Pt/Co/MgO thin films structures by performing harmonic Hall measurements. The behaviour of the damping like (…
Electrical detection and nucleation of a magnetic skyrmion in a magnetic tunnel junction observed via operando magnetic microscopy
by J. Urrestarazu Larrañaga, Naveen Sisodia, Van Tuong Pham +13
Magnetic skyrmions are topological spin textures which are envisioned as nanometre scale information carriers in magnetic memory and logic devices. The recent demonstration of room…
Revealing nanoscale disorder in W/CoFeB/MgO ultra-thin films using domain wall motion
Johannes Wilhelmus van der Jagt, Vincent Jeudy, André Thiaville +11
Disorder in ultra-thin magnetic films can significantly hinder domain wall motion. One of the main issues on the path towards efficient domain wall based devices remains the charac…
Gate-controlled skyrmion and domain wall chirality
Charles-Elie Fillion, Johanna Fischer, Raj Kumar +14
Magnetic skyrmions are localized chiral spin textures, which offer great promise to store and process information at the nanoscale. In the presence of asymmetric exchange interacti…
Skyrmions in synthetic antiferromagnets and their nucleation via electrical current and ultrafast laser illumination
Roméo Juge, Naveen Sisodia, Joseba Urrestarazu Larrañaga +24
Magnetic skyrmions are topological spin textures that hold great promise as nanoscale information carriers in non-volatile memory and logic devices. While room-temperature magnetic…
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…
Imprint from ferromagnetic skyrmions in an antiferromagnet via exchange bias
Kumari Gaurav Rana, Rafael Lopes Seeger, Sandra Ruiz-Gómez +11
Magnetic skyrmions are topological spin textures holding great potential as nanoscale information carriers. Recently, skyrmions have been predicted in antiferromagnets, with key ad…
Control of skyrmion chirality in Ta/FeCoB/TaOx trilayers by TaOx oxidation and FeCoB thickness
Raj Kumar, Charles-Elie Fillion, Bertrand Lovery +10
Skyrmions are magnetic bubbles with nontrivial topology envisioned as data bits for ultrafast and power-efficient spintronic memory and logic devices. They may be stabilized in hea…
Room temperature skyrmions at zero field in exchange-biased ultrathin films
K. Gaurav Rana, A. Finco, F. Fabre +12
We demonstrate that magnetic skyrmions with a mean diameter around 60 nm can be stabilized at room temperature and zero external magnetic field in an exchange-biased Pt/Co/NiFe/IrM…
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…
Current-induced nucleation and dynamics of skyrmions in a Co-based Heusler alloy
W. Akhtar, A. Hrabec, S. Chouaieb +9
We demonstrate room-temperature stabilization of dipolar magnetic skyrmions with diameters in the range of nm in a single ultrathin layer of the Heusler alloy CoFeAl (CFA…
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…
Anisotropic Dzyaloshinskii-Moriya Interaction in ultra-thin epitaxial Au/Co/W(110)
Lorenzo Camosi, Stanislas Rohart, Olivier Fruchart +8
We have used Brillouin Light Scattering spectroscopy to independently determine the in-plane Magneto-Crystalline Anisotropy and the Dzyaloshinskii-Moriya Interaction (DMI) in out-o…
Current-induced skyrmion generation and dynamics in symmetric bilayers
Ales Hrabec, Joao Sampaio, Mohamed Belmeguenai +7
Magnetic skyrmions are textures behaving as quasiparticles which are topologically different from other states. Their discovery in systems with broken inversion symmetry sparked th…
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…