Spin-wave interference patterns for memory and computation.

Ferran Macia, NYU

Spin-wave excitations due to spin-momentum transfer in ferromagnetic thin films will enable new types of information processing and memory storage. This talk shows how arrays of spin-torque nano-oscillators  (STNOs) can be used to create anisotropic spin-wave interference  patterns and, when pulsed, propagating spin-wave activity. Memristic  transponders distributed on the thin film respond to threshold tunnel  magnetoresistance (TMR) values thereby detecting the spin-waves and creating new excitation patterns. Arrangements of transponders create  resonant (reverberating) spin-wave activity --that may be the basis of  polychronous wave computation of arithmetic and Boolean functions as  well as information storage.