Toffoli gadget for magnetic-tunnel-junction Boltzmann machines
Magnetic tunnel junctions (MTJs) are promising building blocks for energy-efficient computing in neuromorphic and optimization applications, but implementing logic functions in coupled MTJs remains a significant challenge. This study offers an approach to building a universal reversible Toffoli gate using interacting macrospins---representing MTJ free layers---evolving under Landau-Lifshitz-Gilbert dynamics. With tuning and thermal annealing, the system reliably converges on correct logic outputs, revealing strategies for embedding logic into magnetic hardware. This approach could enable more complex spintronic computational architectures founded on MTJ-based Boltzmann machines.
Authors
- Dairong Chen (ORCID: https://orcid.org/0009-0006-3054-5409)
- Dries Sels (ORCID: https://orcid.org/0000-0001-6518-761X)
- Ahmed Sidi El Valli (ORCID: https://orcid.org/0000-0003-1106-2664)
- Andrew D. Kent (ORCID: https://orcid.org/0000-0002-9050-8822)
- Flaviano Morone (ORCID: https://orcid.org/0000-0002-8830-1179)
- J. Z. Sun (ORCID: https://orcid.org/0000-0002-5834-2412)
- Augustin Couton Wyporek
- Pierre Chailloleau
- Stephane Mangin
Institutions
- Flatiron Health (United States) (US)
- Flatiron Institute (US)
- New York University (US)
- Université de Lorraine (FR)
Publication Details
- Journal
- Physical Review Applied
- Published
- 2025-03-20
- DOI
- https://doi.org/10.1103/physrevapplied.23.034044
- Primary Topic
- Magnetic properties of thin films
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- Université de Lorraine
- Office of Naval Research