A skyrmion content-addressable cell for skyrmion magnetic memories. 2022

Luca Gnoli, and Fabrizio Riente
Department of Electronics and Telecommunications, Politenico di Torino, Corso Duca degli Abruzzi 24, I-10129, Torino, Italy.

Content-addressable memories (CAMs) allow searching a pattern, processing in parallel all the data stored. Beyond-CMOS technologies can provide new opportunities to improve CAM memories implementations both at the device and architectural level. In this article, we propose a ternary content-addressable memory cell based on skyrmion technology. The proposed memory cell is based on skyrmion racetrack memory. The cell is able to signal if the bit contained in the cell in form of skyrmion corresponds to an electrical input, the target of the search operation. The proposed design, verified by means of micromagnetic simulations, has an area of 0.054μm2and can perform a search operation in 3.3 ns with an energy of 10.5 fJ. The operation performed is non-destructive and does not require conversion between the magnetic and the electronic domains. For this reason, the designed cell has the potential to be used as a basic block for non-volatile CAM memories. Here, we propose also a layout structure to implement a CAM memory employing the proposed cell. This structure allows to achieve memory density comparable to traditional racetrack memories and execute at the same time CAM operations.

UI MeSH Term Description Entries

Related Publications

Luca Gnoli, and Fabrizio Riente
April 2020, Nature communications,
Luca Gnoli, and Fabrizio Riente
September 2020, Advanced materials (Deerfield Beach, Fla.),
Luca Gnoli, and Fabrizio Riente
January 1987, Biophysical journal,
Luca Gnoli, and Fabrizio Riente
October 2014, Scientific reports,
Luca Gnoli, and Fabrizio Riente
July 2020, Journal of physics. Condensed matter : an Institute of Physics journal,
Luca Gnoli, and Fabrizio Riente
June 2003, International journal of neural systems,
Luca Gnoli, and Fabrizio Riente
December 2022, Nanomaterials (Basel, Switzerland),
Luca Gnoli, and Fabrizio Riente
October 2009, Cell,
Luca Gnoli, and Fabrizio Riente
September 2021, Nature communications,
Copied contents to your clipboard!