Events
Past events can be found in the archive.
Internal users can find the list of upcoming seminar presentations and the seminar dates to be booked in the E134 Colab Space., opens an external URL in a new window
04. November 2025, 16:00 until 17:00
Dédalo Sanz Hernandez, Laboratoire Albert Fert, CNRS, Thales, Université Paris-Saclay, FRANCE
Seminar
Spintronics brings intrinsic memory, wave-based dynamics, and non-linearity into neuromorphic computing, offering a promising route toward energy-efficient, brain-inspired hardware. In this work, we experimentally demonstrate a compact neural network in which all computing elements—both synapses and neurons—are implemented using magnetic tunnel junctions (MTJs).
The architecture uses frequency multiplexing to interconnect neurons and synapses: each junction's oscillation frequency serves as a unique address, enabling selective coupling between elements sharing the same frequency. I will present two implementations of this architecture, each highlighting different advantages.
In the first approach, binary vortex-based synapses can be remotely switched between states without requiring direct local access. This is achieved by globally broadcasting RF signals, allowing highly efficient control. In the second implementation, each synapse features local access and continuous tunability across a wide frequency range via magneto-ionic effects. This enables dynamic adjustment of synaptic weights and even real-time reconfiguration of the network topology—mimicking dendritic plasticity found in biological systems.
We show that these results represent a significant advance toward spintronic-based neuromorphic hardware capable of on-edge learning and self-adaptation.
Ross, A. et al. Nature Nanotechnology 18, 1273–1280 (2023).
Grollier, J. et al. Nature Electronics 3, 360–370 (2020).
Plouet, E. et al. Proc. IEEE Int. Electron Devices Meeting (IEDM), San Francisco, USA (2024).
Leroux, N. et al. Neuromorphic Computing and Engineering 2, 034002 (2022).
Event details
- Event location
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SEM.R. DB gelb 05 B
1040 Wien
Wiedner Hauptstraße 8-10/E134 - Organiser
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IAP
Manuela Marik
marik@iap.tuwien.ac.at - Public
- Yes
- Entrance fee
- No
- Registration required
- No