Publications (28)
Mechanical detection of nuclear spin relaxation in a micron-size crystal
O. Klein, V. V. Naletov, H. Alloul
A room temperature nuclear magnetic resonance force microscope (MRFM), fitted in a Tesla electromagnet, is used to measure the nuclear spin relaxation of H in a micron-size…
Magnetization oscillations and waves driven by pure spin currents
V. E. Demidov, S. Urazhdin, G. de Loubens +4
Recent advances in the studies of pure spin currents - flows of angular momentum (spin) not accompanied by the electric currents - have opened new horizons for the emerging technol…
Spin torque resonant vortex core expulsion for an efficient radio-frequency detection scheme
A. S. Jenkins, R. Lebrun, E. Grimaldi +9
Spin-polarised radio-frequency currents, whose frequency is equal to that of the gyrotropic mode, will cause an excitation of the core of a magnetic vortex confined in a magnetic t…
A Frequency-Controlled Magnetic Vortex Memory
B. Pigeau, Grégoire De Loubens, O. Klein +6
Using the ultra low damping NiMnSb half-Heusler alloy patterned into vortex-state magnetic nano-dots, we demonstrate a new concept of non-volatile memory controlled by the frequenc…
Magnetic Field Dependence of the Level Spacing of a Small Electron Droplet
O. Klein, D. Goldhaber-Gordon, C. de C. Chamon +1
The temperature dependence of conductance resonances is used to measure the evolution with the magnetic field of the average level spacing of a droplet containing …
Magnetization reduction induced by nonlinear effects
G. de Loubens, V. V. Naletov, O. Klein
This letter reports the first detailed measurement of , the component parallel to the effective field direction, when ferromagnets are excited by microwave fields at high powe…
Simultaneous multitone microwave emission by DC-driven spintronic nano-element
A. Hamadeh, D. Slobodianiuk, R. Moukhader +9
Current-induced self-sustained magnetization oscillations in spin-torque nano-oscillators (STNOs) are promising candidates for ultra-agile microwave sources or detectors. While usu…
Bistability of vortex core dynamics in a single perpendicularly magnetized nano-disk
Grégoire De Loubens, A. Riegler, B. Pigeau +10
Microwave spectroscopy of individual vortex-state magnetic nano-disks in a perpendicular bias magnetic field, , is performed using a magnetic resonance force microscope (MRFM).…
Optimizing magneto-dipolar interactions for synchronizing vortex based spin-torque nano-oscillators
F. Abreu Araujo, A. D. Belanovsky, P. N. Skirdkov +8
We report on a theoretical study about the magneto-dipolar coupling and synchronization between two vortex-based spin-torque nano-oscillators. In this work we study the dependence…
Optimizing the magnon-phonon cooperativity in planar geometries
K. An, C. Kim, K. -W. Moon +7
Optimizing the cooperativity between two distinct particles is an important feature of quantum information processing. Of particular interest is the coupling between spin and phono…
Mechanical detection of FMR spectrum in a normally magnetized YIG disk
V. Charbois, V. V. Naletov, J. Ben Youssef +1
The ferromagnetic resonance spectrum of a normally magnetized YIG disk, with thickness of 4.75m and radius of 80m, is measured at room temperature both by magnetic resonanc…
Reversal of coupled vortices in advanced spintronics: A mechanistic study
A. Hamadeh, A. Koujok, S. Perna +7
This study conducts a comprehensive investigation into the reversal mechanism of magnetic vortex cores in a nanopillar system composed of two coupled ferromagnetic dots under zero…
Direct observation of dynamic modes excited in a magnetic insulator by pure spin current
V. E. Demidov, M. Evelt, V. Bessonov +11
Excitation of magnetization dynamics by pure spin currents has been recently recognized as an enabling mechanism for spintronics and magnonics, which allows implementation of spin-…
Efficient Synchronization of Dipolarly Coupled Vortex-Based Spin Transfer Nano-Oscillators
N. Locatelli, A. Hamadeh, F. Abreu Araujo +10
Due to their nonlinear properties, spin transfer nano-oscillators can easily adapt their frequency to external stimuli. This makes them interesting model systems to study the effec…
Conductance of an Artificial Atom in Strong Magnetic Fields
O. Klein, C. de C. Chamon, D. Tang +4
The conductance resulting from resonant tunneling through a droplet of electrons is used to measure its chemical potential . Abrupt shifts of occur at shar…
Probing the anharmonicity of the potential well for magnetic vortex core in nanodot
O. V. Sukhostavets, B. Pigeau, G. de Loubens +6
The anharmonicity of the potential well confining the position of the magnetic vortex core is measured dynamically with a Magnetic Resonance Force Microscope (MRFM). The stray fiel…
Driven energy transfer between coupled modes in spin-torque oscillators
R. Lebrun, J. Grollier, P. Bortolotti +11
The mutual interaction between the different eigenmodes of a spin-torque oscillator can lead to a large variety of physical mechanisms from mode hopping to multi-mode generation, t…
Nano-patterned magnonic crystals based on ultrathin YIG films
M. Collet, M. Evelt, V. E. Demidov +9
We demonstrate a microscopic magnonic-crystal waveguide produced by nano-patterning of a 20 nm thick film of Yttrium Iron Garnet. By using the phase-resolved micro-focus Brillouin…
Emission of coherent propagating magnons by insulator-based spin-orbit torque oscillators
M. Evelt, L. Soumah, A. B. Rinkevich +8
We experimentally demonstrate generation of coherent propagating magnons in ultra-thin magnetic-insulator films by spin-orbit torque induced by dc electric current. We show that th…
Ultra-fast perpendicular Spin Orbit Torque MRAM
Murat Cubukcu, Olivier Boulle, Nikolaï Mikuszeit +14
We demonstrate ultra-fast (down to 400 ps) bipolar magnetization switching of a three-terminal perpendicular Ta/FeCoB/MgO/FeCoB magnetic tunnel junction. The critical current densi…
Quantitative MRFM characterization of the autonomous and forced dynamics in a spin transfer nano-oscillator
A. Hamadeh, Grégoire De Loubens, V. V. Naletov +4
Using a magnetic resonance force microscope (MRFM), the power emitted by a spin transfer nano-oscillator consisting of a normally magnetized PyCuPy circular nanopillar is mea…
Optimal broad-band frequency conversion via a magnomechanical transducer
F. Engelhardt, V. A. S. V. Bittencourt, H. Huebl +2
Developing schemes for efficient and broad-band frequency conversion of quantum signals is an ongoing challenge in the field of modern quantum information. Especially the coherent…
Sub-micrometer near-field focusing of spin waves in ultrathin YIG films
B. Divinskiy, N. Thiery, L. Vila +5
We experimentally demonstrate tight focusing of a spin wave beam excited in extended nanometer-thick films of Yttrium Iron Garnet by a simple microscopic antenna functioning as a s…
Electronic control of the spin-wave damping in a magnetic insulator
A. Hamadeh, O. d Allivy Kelly, C. Hahn +12
It is demonstrated that the decay time of spin-wave modes existing in a magnetic insulator can be reduced or enhanced by injecting an in-plane dc current, , in an adja…
Diverse dynamics in interacting vortices systems through tunable conservative and non-conservative coupling strengths
A. Hamadeh, A. Koujok, D. R. Rodrigues +6
Magnetic vortices are highly tunable, nonlinear systems with ideal properties for being applied in spin wave emission, data storage, and neuromorphic computing. However, their tech…
Inverse Spin Hall Effect in nanometer-thick YIG/Pt system
O. d'Allivy Kelly, A. Anane, R. Bernard +13
High quality nanometer-thick (20 nm, 7 nm and 4 nm) epitaxial YIG films have been grown on GGG substrates using pulsed laser deposition. The Gilbert damping coefficient for the 20…
Dynamics of two coupled vortices in a spin valve nanopillar excited by spin transfer torque
N. Locatelli, V. V. Naletov, J. Grollier +7
We investigate the dynamics of two coupled vortices driven by spin transfer. We are able to independently control with current and perpendicular field, and to detect, the respectiv…
Roadmap on Spin-Wave Computing
A. V. Chumak, P. Kabos, M. Wu +113
Magnonics is a field of science that addresses the physical properties of spin waves and utilizes them for data processing. Scalability down to atomic dimensions, operations in the…