Welcome to the Microspectroscopy Group

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The Microspectroscopy Group has a long experience in synchrotron based hyperspectral imaging for a wide variety of materials and involving many different scientific disciplines. In particular we study the nanostructures of novel organic materials and the magnetic properties of thin films and multilayers employing a combination of X-ray microscopy and spectroscopy. We operate two beamlines at the SLS, PolLux and ISS. At these beamlines we perform our research and provide support for external users.

Top: Sketch of the operating principle of the MEMS device utilized to generate an in-situ strain to a freestanding film positioned between the two cantilevers of the device; (Bottom) XLD ptychography images of the spin cycloidal configuration of a (001) BiFeO3 freestanding film as a function of the tensile strain applied by the MEMS device

In-situ straining with a MEMS device

Researchers from an international collaboration between Switzerland, Italy, Germany, and Taiwan have developed a device for the in situ straining of freestanding ferroic films alllowing for ptychographic imaging whilst applying a mechanical strain. The results have been published as Editors' Suggestion within Physical Review B.

Schematic of membrane flexure and domain modification under strain

Designing antiferromagnetic domains by stretching membranes in STXM

Researchers from an international collaboration between the United Kingdom and Switzerland have performed imaging of an antiferromagnetic iron oxide membrane using soft X-ray microscopy. By stretching the membranes using a gas cell, the team investigated the modification of domain structures under strain.

Inside of the SOPHIE endstation

SOPHIE - A new endstation for high-resolution soft X-ray ptychography

A new PSI-designed and built soft X-ray ptychography endstation, SOPHIE, has been successfully commissioned. Routine sub-5nm imaging was demonstrated.