Scientific highlights illustrated by key publications
- In plane reorientation induced single laser pulse magnetization reversal (October 27th, 2023)
We demonstrate that single pulse all optical helicity independent switching can be generalized for a large range of rare earth–transition metal multilayers. The threshold fluence for switching is observed to be independent of the pulse ... - Spiking neuron based on magnetic tunnel junction with dual free layer (October 27th, 2023)
We demonstrate that a perpendicular magnetic tunnel junction (MTJ) is capable of emulating an artificial spiked neuron. The magnetic stack has been designed so that the MTJ has two free layers, whose magnetization can be ... - A high gain flux concentrator greatly amplifies the sensitivity of a magnetic field sensor (October 16th, 2023)
The large magnetometers currently used onboard satellites for space exploration cannot be installed in the tiny nanosatellites (cubesat) that are envisioned for multipoint measurements. As a first step towards the realization of a miniature space ... - SpinDrop: Dropout Based Bayesian Binary Neural Networks with STT-MRAM (October 16th, 2023)
Bayesian NN (BayNN) using Dropout-based approximation provides a systematic approach for estimating the uncertainty of predictions. Despite such merit, they are not suitable for implementation in an embedded device and in most cases cannot meet ... - Epitaxial van der Waals heterostructures of Cr2Te3 on 2D material (August 01st, 2023)
For the future integration of 2D materials in spintronic devices (sensors, memories…), the ability to grow van der Waals (vdW) heterostructures combining 2D magnets, high mobility, high spin-orbit coupling (SOC) or topological materials on large ... - Non-volatile electric control of spin-orbit torques in an electron gas (August 01st, 2023)
Spin-orbit torques (SOTs) have the potential to manipulate magnetization using in-plane current, and two-dimensional electron gases (2DEGs) provide a highly efficient spin-to-charge current interconversion. This paper reports the non-volatile electric-field control of SOTs in an ... - Review – From Early Theories of Dzyaloshinskii–Moriya Interactions in Metallic Systems to Today’s Novel Roads (June 09th, 2023)
Albert Fert, Mairbek Chshiev, André Thiaville and Hongxin Yang, J. Phys. Soc. Jpn. 92, 081001 (2023). In this Review article, the authors briefly introduce the research history of DMI and its significance in the field of ... - Spin transfer torque based magnetic sensor and signal conditioning electronics (May 31st, 2023)
A new type of magnetic sensor based on the spin transfer torque using 50-100nm diameter perpendicular magnetic tunnel junctions was recently reported in the IEEE Sensors Journal. The paper demonstrates the magnetic field sensing principle, ... - Book – The basics of electron transport in spintronics: textbook with lectures, exercises and solutions (May 26th, 2023)
Book – The basics of electron transport in spintronics: textbook with lectures, exercises and solutions V. Baltz, EDP Sciences Here is the ideal book to grasp the basic concepts of spin-dependent electron transport and to develop a ... - Gradient-Induced Dzyaloshinskii–Moriya Interaction (April 17th, 2023)
The Dzyaloshinskii–Moriya interaction (DMI) arising in the magnetic systems with broken inversion symmetry plays an essential role in topological spintronics. Using atomistic spin model simulations of an intriguing type of DMI emerging in the films ... - Micromagnetics of chemical modulations in cylindrical nanowires (February 09th, 2023)
We combined chemical synthesis, magnetic microscopy and micromagnetic simulations to provide a comprehensive view of the micromagnetics of chemical modulations in cylindrical nanowires. This sets the ground for their use to investigate the specific aspects ... - Vibrating magnetic microparticles to stimulate insulin secretion (February 09th, 2023)
In the context of intensive research on treatments against diabetes – major health threat to millions of people, we report here on an innovative approach based on mechanobiology. Basically, chronic hyperglycemia is regulated by a ... - Waking-up wireless sensor nodes with perpendicular magnetic tunnel junctions (December 19th, 2022)
Spin-torque-nanodiodes based on magnetic tunnel junctions are promising candidates for RF energy harvesters and ultra-low power wake-up receivers with performances that are expected to surpass those of semiconductor diodes. Experiments on magnetic tunnel junctions with ... - Spintronic Memristor based Binarized Ensemble Convolutional Neural Network (December 15th, 2022)
We have investigated the use of spintronic devices to enable the implementation of a Binary Ensemble Convolutional Neural Network. A simulation flow has been setup and allowed to evaluate this disruptive combination and very promising ... - Spin-transport in antiferromagnets from the GHz to THz regime (December 12th, 2022)
Control over spin transport in antiferromagnetic systems is essential for future spintronic applications with operational speeds extending to ultrafast time scales. A consortium of physicists at SPINTEC, JGU Berlin and Charles University Prague established the ...
