Nanoscale Mapping of Magnetic Auto-Oscillations with a Single Spin Sensor.

ABSTRACT: Spin Hall nano-oscillators convert DC to magnetic auto-oscillations in the microwave regime. Current research on these devices is dedicated to creating next-generation energy-efficient hardware for communication technologies. Despite intensive research on magnetic auto-oscillations within the past decade, the nanoscale mapping of those dynamics remained a challenge. We image the distribution of free-running magnetic auto-oscillations by driving the electron spin resonance transition of a single spin quantum sensor, enabling fast acquisition (100 ms/pixel). With quantitative magnetometry, we experimentally demonstrate for the first time that the auto-oscillation spots are localized at magnetic field minima acting as local potential wells for confining spin-waves. By comparing the magnitudes

SUBMITTER: Hache T 

PROVIDER: S-EPMC11803721 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature