Coherent x-ray magnetic imaging with 5 nm resolution
Riccardo BattistelliDaniel MetternichMichael Schneider and Lisa-Marie KernKai LitziusJosefin FuchsChristopher Klose and Kathinka GerlingerKai BagschikChristian M. G\"untherDieter EngelClaus RopersStefan EisebittBastian PfauFelix B\"uttnerSergey Zayko
Riccardo BattistelliDaniel MetternichMichael Schneider and Lisa-Marie Kern
Soft x-ray microscopy plays an important role in modern spintronics. However, the achievable resolution of most x-ray magnetic imaging experiments is above 10 nm, limiting access to fundamental and technologically relevant length scales. Here, we demonstrate x-ray magnetic microscopy with 5 nm resolution by combining holography-assisted coherent diffractive imaging with heterodyne amplification of the weak magnetic signal. The gain in resolution and contrast allows direct access to key magnetic properties, including domain wall profiles and the position of pinning sites. The ability to detect and map such properties with photons opens new horizons for element-specific, time-resolved, and in-operando research on magnetic materials and beyond.