All-spin nanomagnetic state elements

We propose an all-spin state element using spin currents and nanomagnets to enable all-spin state machines for digital computing. We demonstrate via numerical simulations the operation of the state element, a critical building block for synchronous, sequential logic computation. The numerical models encompass Landau-Lifshitz-Gilbert nanomagnet dynamics with stochastic models and vector spin-transport in metallic magnetic and non-magnetic channels. Combined with all-spin combinatorial logic, the state elements can enable synchronous and asynchronous computing elements.