6533b870fe1ef96bd12d0466

RESEARCH PRODUCT

Time-resolved photoemission electron microscopy

subject

description

The excellent time structure of Synchrotron radiation and short-pulse lasers has opened the door to a novel way of time-resolved imaging using PEEM. Periodic or repetitive processes can be studied by stroboscopic illumination with the pulsed photon beam. Since the first experiments in 2003, two fields of applications have been established in several groups. One concerns the investigation of fast magnetisation processes like precessional switching, Gigahertz-eigenmodes of ferromagnetic nanostructures or travelling spin waves in thin films. More recently, femtosecond lasers have been used for imaging of localised surface plasmons in nanoparticles and their temporal behaviour in the femtosecond range. In this contribution the state-of-the-art of time-resolved PEEM-imaging is discussed. New contrast mechanisms besides the common X-ray magnetic circular dichroism (XMCD) have been discovered that make the technique independent of Synchrotron radiation. Finally, the potential for dynamic aberration correction will be addressed. The field is reviewed in [1].