1,721,235 research outputs found
Progettazione di nano-oscillatori basati sul trasferimento del momento angolare di spin e sull’effetto spin-hall
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Magnetization dynamics driven by the combined effect of the Spin Transfer Torque and the Spin Orbit Torque
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Stochastic resonance of a domain wall in a stripe with two pinning sites
Full text linkWe report on the observation of stochastic resonance phenomenon of a single domain wall in a ferromagnetic stripe with two pinning sites. Under a weak oscillating field, the wall performs irregular transitions between both constrictions in the presence of thermal fluctuations. Ours results indicate that synchronized wall transitions with the driving field can be achieved at the optimal level of noise. The stochastic resonance is quantified by computing the output signal power as a function of temperature. The analysis points out that this system could be used to design well-controlled amplification devices, which could find application as nanodetectors
Empowering spintronics with antiferromagnetic diodes: Spintronics
No full textA spintronic diode made from a W/Mn3Sn bilayer shows broadband rectification at frequencies up to 30 GHz
A Nonlinear and Non-Stationary Signal Analysis for Accurate Power Quality Monitoring in Smart Grids
No full textThe broad diffusion of renewable energy-based technologies has introduced several open issues in the design and operation of Smart Grids (SGs). Recently, several studies have focused attention on the Power Quality (PQ) when Distributed Generators (DGs) connected to SGs inject a large amount of power. This paper discusses the influence of PhotoVoltaic (PV) plants in real distribution lines. In particular, a numerical tool has been developed in order to study the active power of distribution lines. The dataset derives from real measured acquisitions of distribution lines feeding residential and commercial users. The mathematical approach is based on both the Wavelet Analysis (WA) and the Hilbert-Huang Transform (HHT) in order to select and isolate the different operation modes of the distribution line. Numerical results highlight that PV plants strongly affect the time-domain power signal. As this signal is typically non stationary and nonlinear, the HHT-based approach allows to fix power disturbances and anomalies
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