High-Speed CMOS-Free Purely Spintronic Asynchronous Recurrent Neural Network. - Pranav O. Mathews; Christian B. Duffee; Abel Thayil; Ty E. Stovall; Christopher H. Bennett; Felipe García-Sánchez; Matthew J. Marinella; Jean Anne C. Incorvia; Naimul Hassan; Xuan Hu 002; Joseph S. Friedman (CoRR, 2021)