Phys.org July 29, 2021
An international team of researchers (USA – New York University, UC San Diego, France) combined the unique properties of quantum materials together with that of spintronic magnetic devices. They presented spin torque ferromagnetic resonance characteristics of a hybrid metal-insulator-transition oxide/ ferromagnetic metal nano constriction. Their samples incorporate vanadium trioxide (V2O3), with Ni, Permalloy (Ni80Fe20) and platinum layers patterned into a nano constriction geometry. The first order phase transition in V2O3 is shown to lead to systematic changes in the resonance response and hysteretic current control of the ferromagnetic resonance frequency. The output signal can be systematically varied by locally changing the state of the V2O3 with a dc current. These results demonstrate new spintronic resonator functionalities of interest for neuromorphic computing…read more. Open Access TECHNICAL ARTICLE
A nano constriction spintronic resonator. (a) Schematic shows the layers and the geometry. The signal (S) and ground (G) electrical contacts are indicated… Credit: Scientific Reports volume 11, Article number: 15082 (2021)Â