140 citations · 530 across the 26 of their papers we have counts for
14 papers · 1 filter
Deterministic control of the probabilistic phase dynamics in injection-locked spin-torque nano-oscillators
Abderrazak Hakam, Chloé Chopin, Nhat-Tan Phan +8
Spin-torque nano-oscillators (STNOs) inherently exhibit thermally driven phase fluctuations that render their dynamics truly stochastic. Here, we demonstrate that, despite this int…
Trainable Neuromorphic Spintronic Hardware Via Analog Finite-Difference Gradient Methods
Catarina Pereira, Alex Jenkins, Eleonora Raimondo +8
Spintronic nano-neurons offer a promising route towards energy-efficient, high-performance hardware neural networks thanks to their inherent low-input nonlinear dynamics. However,…
The impact of local pinning sites in magnetic tunnel junctions with non-homogeneous free layers
Alex. S. Jenkins, Leandro Martins, Luana Benetti +7
Pinning at local defects is a significant road block for the successful implementation of technological paradigms which rely on the dynamic properties of non-trivial magnetic textu…
A semi-analytical model to simulate the spin-diode effect and accelerate its use in neuromorphic computing
Chloé Chopin, Leandro Martins, Luana Benetti +4
The spin-diode effect is studied both experimentally and with our original semi-analytical method. The latter is based on an improved version of the Thiele equation approach (TEA)…
Classification of multi-frequency RF signals by extreme learning, using magnetic tunnel junctions as neurons and synapses
Nathan Leroux, Danijela Marković, Dédalo Sanz-Hernández +8
Extracting information from radiofrequency (RF) signals using artificial neural networks at low energy cost is a critical need for a wide range of applications from radars to healt…
Wireless communication between two magnetic tunnel junctions acting as oscillator and diode
Danijela Marković, Nathan Leroux, Alice Mizrahi +7
Magnetic tunnel junctions are nanoscale spintronic devices with microwave generation and detection capabilities. Here we use the rectification effect called "spin-diode" in a magne…
A multi-band analogue frequency sensor with sub-MHz resolution based on a Vortex Nano-Oscillator
Alex S. Jenkins, Lara. San Emeterio Alvarez, Roberta Dutra +3
As the Internet of Things (IoT) becomes more integral to how we live our lives and society becomes ever increasingly connected, the need for efficient nanoscale radio frequency det…
Broadband voltage rectifier induced by linear bias dependence in CoFeB/MgO magnetic tunnel junctions
M. Tarequzzaman, A. S. Jenkins, T. Böhnert +5
In this paper, the perpendicular magnetic anisotropy (PMA) is tailored by changing the thickness of the free layer with the objective of producing MTJ nano-pillars with smooth line…
Magnetic oscillations Excited by Concurrent Spin Injection from a Tunneling Current and a Spin Hall Current
M. Tarequzzaman, T. Böhnert, M. Decker +9
In this paper, a 3-terminal spin-transfer torque nano-oscillator (STNO) is studied using the concurrent spin injection of a spin-polarized tunneling current and a spin Hall current…
Mutual synchronization of spin torque nano-oscillators through a non-local and tunable electrical coupling
R. Lebrun, S. Tsunegi, P. Bortolotti +8
The concept of spin torque driven high frequency magnetization dynamics has opened up the field of spintronics to non-linear physics, potentially in complex networks of dynamical s…
Self-injection locking of a vortex spin torque oscillator by delayed feedback
S. Tsunegi, E. Grimaldi, R. Lebrun +8
The self-synchronization of spin torque oscillators is investigated experimentally by re-injecting its radiofrequency (rf) current after a certain delay time. We demonstrate that t…
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…
Understanding of phase noise squeezing under fractional synchronization of non-linear spin transfer vortex oscillator
R. Lebrun, A. Jenkins, A. Dussaux +10
We investigate experimentally the synchronization of a vortex based spin transfer oscillator to an external rf current whose frequency is at multiple integers, as well as half inte…
Temperature dependence of the emission linewidth in MgO-based spin torque nano-oscillators
J. F. Sierra, M. Quinsat, U. Ebels +8
Spin transfer driven excitations in magnetic nanostructures are characterized by a relatively large microwave emission linewidth (10 -100 MHz). Here we investigate the role of ther…