Experimental Clocking of Nanomagnets with Strain for
Ultralow Power Boolean Logic
Noel D’Souza
Mohammad Salehi Fashami
Supriyo Bandyopadhyay
Jayasimha Atulasimha
10.1021/acs.nanolett.5b04205.s001
https://acs.figshare.com/articles/journal_contribution/Experimental_Clocking_of_Nanomagnets_with_Strain_for_Ultralow_Power_Boolean_Logic/2071822
Nanomagnetic
implementations of Boolean logic have attracted attention because
of their nonvolatility and the potential for unprecedented overall
energy-efficiency. Unfortunately, the large dissipative losses that
occur when nanomagnets are switched with a magnetic field or spin-transfer-torque
severely compromise the energy-efficiency. Recently, there have been
experimental reports of utilizing the Spin Hall effect for switching
magnets, and theoretical proposals for strain induced switching of
single-domain magnetostrictive nanomagnets, that might reduce the
dissipative losses significantly. Here, we experimentally demonstrate,
for the first time that strain-induced switching of single-domain
magnetostrictive nanomagnets of lateral dimensions ∼200 nm
fabricated on a piezoelectric substrate can implement a nanomagnetic
Boolean NOT gate and steer bit information unidirectionally in dipole-coupled
nanomagnet chains. On the basis of the experimental results with bulk
PMN–PT substrates, we estimate that the energy dissipation
for logic operations in a reasonably scaled system using thin films
will be a mere ∼1 aJ/bit.
2016-02-04 16:35:17
magnetostrictive nanomagnets
Ultralow Power Boolean LogicNanomagnetic implementations
logic
nanomagnetic Boolean NOT gate
PMN
substrate
Spin Hall effect
bit information unidirectionally
dissipative losses