Performance of Magnetic Quantum Cellular Automata and Limitations due to Thermal Noise

By Ajey Jacob, Dmitri Nikonov1

1. Intel Corporation

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Operation parameters of magnetic quantum cellular automata are evaluated for the purposes of
reliable logic operation. The dynamics if nanomagnets is simulated via Landau-Lifshitz-Gilbert equations with stochastic magnetic field corresponding to thermal fluctuations. It is found that in the macrospin approximation the switching speed does not change under scaling of both size and distances between nanomagnets. Thermal fluctuations put a limitation on the size of nanomagnets, since the gate error rate excessive for nanomagnets smaller than 200nm at room temperature.


1. Federico M. Spedalieri and Vwani P. Roychowdhury
2. Ajey P. Jacob and Dmitri Nikonov
1 Department of Electrical Engineering,
University of California, Los Angeles,
Los Angeles, California 90095, USA
2. Technology Strategy, Technology and Manufacturing Group,
Intel Corporation, 2200 Mission College Blvd.,
Santa Clara, California 95052, USA

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Researchers should cite this work as follows:

  • Ajey Jacob; Dmitri Nikonov (2011), "Performance of Magnetic Quantum Cellular Automata and Limitations due to Thermal Noise,"

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  1. nanoelectronics
  2. Nanomagnetism
  3. spintronics
  4. Magnetic dipole Logic