Scaling limits on all-spin logic

Sou Chi Chang, Nickvash Kani, Sasikanth Manipatruni, Dmitri E. Nikonov, Ian A. Young, Azad Naeemi

Research output: Contribution to journalArticlepeer-review


Scaling limits on all-spin logic (ASL) are theoretically studied using the spin circuit theory and the stochastic Landau-Lifshitz-Gilbert equation under the macrospin approximation. It is found that as ASL circuits are scaled, the device delay significantly increases due to a stronger dipole coupling between the input and the output magnets. The effect of the dipole interaction can be mitigated by increasing the input current and by using smaller magnets with stronger material anisotropy and weaker saturation magnetization. Furthermore, the presence of the leakage current modifies the device delay. Finally, both delay and energy of ASL dramatically increase as the shunt path is shortened. Possible solutions to eliminate the leakage current and the shunt path are discussed.

Original languageEnglish (US)
Article number7384517
JournalIEEE Transactions on Magnetics
Issue number7
StatePublished - Jul 2016
Externally publishedYes


  • All-spin logic (ASL)
  • dipole coupling
  • magnetization dynamics
  • spin transport

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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