A5042653647- Magnetic properties of thin films
- Quantum and electron transport phenomena
- Advanced Memory and Neural Computing
- Neural Networks and Reservoir Computing
- Quantum Computing Algorithms and Architecture
- Magnetic Field Sensors Techniques
- Cellular Automata and Applications
- Molecular Communication and Nanonetworks
- Chaos-based Image/Signal Encryption
- Magneto-Optical Properties and Applications
- ZnO doping and properties
- Quantum-Dot Cellular Automata
- Theoretical and Computational Physics
- Ferroelectric and Negative Capacitance Devices
- Neural Networks and Applications
- Advanced Data Storage Technologies
- Force Microscopy Techniques and Applications
- Gene Regulatory Network Analysis
- Graph theory and applications
- Photonic and Optical Devices
New York University
2024-2025
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2020-2024
Spintronique et Technologie des Composants
2020-2024
Institut polytechnique de Grenoble
2022-2024
Université Grenoble Alpes
2021-2024
CEA Grenoble
2020-2024
Centre National de la Recherche Scientifique
2022-2024
Institut de Recherche Interdisciplinaire de Grenoble
2021
Unbiased sources of true randomness are crucial for the next generation encryption applications and stochastic computing in various fields, yet achieving such without bias has remained technically challenging. This study introduces an innovative hardware approach, utilizing intrinsic balance phase noise a spintronic nano-oscillator synchronized at twice its natural frequency to overcome random bitstream room temperature. The method generates truly bitstreams with efficiency reliability that...
The advantage of an ultrafast frequency-tunability spin-torque nano-oscillators (STNOs) that have a large (>100 MHz) relaxation frequency amplitude fluctuations is exploited to realize wide-band time-resolved spectral analysis at nanosecond time scale with resolution limited only by the "bandwidth" theorem. demonstration performed STNO generating in 9 GHz range and comprised perpendicular polarizer perpendicularly uniformly magnetized "free" layer. It shown such uniform-state STNO-based...
Large quantities of random numbers are crucial in a wide range applications. We have recently demonstrated that perpendicular nanopillar magnetic tunnel junctions (pMTJs) can produce true bits when actuated with short pulses. However, our implementation used high-end and expensive electronics, such as high bandwidth arbitrary waveform generator analog-to-digital converter, was limited to relatively low data rates. Here, we significantly increase the speed number generation (TRNG) stochastic...
Spintronic rf detectors are efficient nanoscale counterparts to conventional semiconductor-based components for energy harvesting and wireless communication at low input power. Here, we report on the optimization of rectified output dc voltage using magnetic tunnel junctions (MTJs) with strong perpendicular anisotropy both polarizing free layers. The magnetization layer is fixed out-of-plane, while thickness adjusted so that its orientation changes from in-plane out-of-plane. Rectification...
In this article here below, we present an electrical model for nanoscale spintronic radio frequency (RF) detectors called spin-torque diodes (STDs). A complete methodology parameter extraction is proposed. An equivalent circuit STD derived and includes a modeling of the device resistance nonlinearity together with effect. detailed step-by-step presented to extract parameters using conventional dc measurements, RF scattering ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...
We demonstrate the miniaturization of perpendicularly magnetized superparamagnetic tunnel junctions (SMTJs) down to 50 nm in diameter. experimentally show stochastic reversals those junctions, with tunable mean dwell times a few nanoseconds through applied magnetic field and voltage. The measured at negligible bias voltage agree our simulations based on Langer's theory. shed light an Arrhenius prefactor $\tau_0$ femtoseconds, implying that rates thermally-activated transitions exceed...
Large quantities of random numbers are crucial in a wide range applications.We have recently demonstrated that perpendicular nanopillar magnetic tunnel junctions (pMTJs) can produce true bits when actuated with short pulses.However, our implementation used high-end and expensive electronics, such as high bandwidth arbitrary waveform generator analog-to-digital converter, was limited to relatively low data rates.Here, we significantly increase the speed number generation (TRNG) stochastic...
Abstract This letter presents magnetic tunnel junction based spintronic devices completely implemented in a hybrid semiconductor process that comprises complementary metal oxide and technology. To demonstrate the coexistence of both circuits devices, proof‐of‐concept circuit prototype comprising 40 digital serial peripheral interface is fabricated. According to measurement results, selected device from array, when surrounded by an external out‐of‐plane field 1 kOe, emitted microwave signals...
This work is a case study of synthesizing networks binary stochastic units to perform Boolean logic functions and their inverse based on the intrinsic minimization Hamiltonian energy function. In particular, we shed light provide some intuition role stochasticity ability adjust network temperature in generating correct results, at various functional complexity levels.
Compact and energy-efficient computing systems may advantageously harness nanoscale sources of randomness, such as superparamagnetic tunnel junctions (SMTJs). The collective behavior resulting from the coupling between SMTJs could be helpful in hardware implementation cognitive where randomness is a low-cost way to encode explore available information states. Using simple linear circuit, we mutually couple two perpendicular through stochastic jumps their binary resistive This approach led...
Radiofrequency receivers based on energy detection usually require bulky and costly antenna filters. A promising alternative comes from spin-torque diodes that inherently provide both rectifying filtering effects. This work proposes a behavioral electrical model, extracted measurement results, considers the non-linearity of magnetic junction its parasitic. model has been used at system-level to design frequency-shift keying receiver.
Unbiased sources of true randomness are critical for the successful deployment stochastic unconventional computing schemes and encryption applications in hardware. Leveraging nanoscale thermal magnetization fluctuations provides an efficient almost cost-free means generating truly random bitstreams, distinguishing them from predictable pseudo-random sequences. However, existing approaches that aim to achieve often suffer bias, leading significant deviations equal fractions 0 1 bitstreams...