Electrically connected spin-torque oscillators array for 2.4 GHz WiFi band transmission and energy harvesting.

ABSTRACT: The mutual synchronization of spin-torque oscillators (STOs) is critical for communication, energy harvesting and neuromorphic applications. Short range magnetic coupling-based synchronization has spatial restrictions (few µm), whereas the long-range electrical synchronization using vortex STOs has limited frequency responses in hundreds MHz (<500 MHz), restricting them for on-chip GHz-range applications. Here, we demonstrate electrical synchronization of four non-vortex uniformly-magnetized STOs using a single common current source in both parallel and series configurations at 2.4 GHz band, resolving the frequency-area quandary for designing STO based on-chip communication systems. Under injection locking, synchronized STOs demonstrate an excellent time-domain stability and substantially

SUBMITTER: Sharma R 

PROVIDER: S-EPMC8131736 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature