Abstract
The UE49-PGMa beamline hosts a photoemission electron microscope (PEEM) dedicated to spectromicroscopy and element-selective magnetic imaging on the nanometer scale. The instrument is an Elmitec PEEM III equipped with energy filter and Helium cooled manipulator. Laser driven excitations can be studied using an attached Ti:Sa laser. A variety of customized sample holders is available for imaging in moderate magnetic / electric field, temperature control, or local laser excitations. With x-rays the instrument is capable of 30 nm spatial resolution.
Highlights
Magnetic nanostructures are at the heart of modern data storage technology
Typical dimensions of magnetic bits are in the sub-100 nm region
In addition novel magnetoelectronics devices such as magnetic random access memory junctions are operated on the sub-100 nm m scale
Summary
Magnetic nanostructures are at the heart of modern data storage technology. Typical dimensions of magnetic bits are in the sub-100 nm region. In addition novel magnetoelectronics devices such as magnetic random access memory junctions are operated on the sub-100 nm m scale. An understanding magnetic properties of such low-dimensional structures is only accessible to spectro-microscopy tools capable of appropriate lateral resolution. This goal is achieved by combining a photoemission microscope (SPEEM) with a dedicated microfocus PGM beamline (UE49 PGM). High photon ux in combination with full polarization control makes this setup the ideal tool for space resolved and element selective investigation of nanostructures by means of chemical maps (X-ray absorption spectroscopy (XAS)) and magnetic imaging (X-ray magnetic circular dichroism (XMCO) and X-ray magnetic linear dichroism (XMLD))
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