Title: Experimental Clocking of Nanomagnets with Strain for Ultralow Power Boolean Logic
Abstract: Nanomagnetic implementations of Boolean logic 1,2 have garnered attention because of their non-volatility and the potential for unprecedented energy-efficiency.Unfortunately, the large dissipative losses that occur when nanomagnets are switched with a magnetic field 3 or spin-transfer-torque 4 inhibit the promised energy-efficiency.Recently, there have been experimental reports of utilizing the Spin Hall effect for switching magnets [5][6][7] , and theoretical proposals for strain induced switching of single-domain magnetostrictive nanomagnets [8][9][10][11][12] , that might reduce the dissipative losses significantly.Here, we experimentally demonstrate, for the first time, that strain-induced switching of singledomain magnetostrictive nanomagnets of lateral dimensions ~200 nm fabricated on a piezoelectric substrate can implement a nanomagnetic Boolean NOT gate and unidirectional bit information propagation in dipole-coupled nanomagnet chains.This portends ultra-low-energy logic processors and mobile electronics that may operate solely by harvesting energy from the environment without ever needing a battery.