New spin analyzer for research in organic spintronics

Recently, a new spin analyzer was included in the multi method surface analytics of the research group "Interfaces, Nano Materials and Biophysics" (Prof. Dr. Christiane Ziegler). The investment of more than 250.000 EUR was possible through federal funds for university infrastructure development. The measurement method of the new machine allows to study electrons not only concerning their energy but also concerning their intrinsic angular momentum (spin). The spin analyzer is important for ongoing research in the area of organic spintronics which, within OPTIMAS, is done in cooperation with the research group "Ultrafast Phenomena at Surfaces" (Prof. Dr. Martin Aeschlimann). Spintronics refers to advanced developments of conventional electronics that rely for information processing, not only on the charge of electrons but also on their spin. The Giant Magneto Resistance effect (GMR) that was awarded the Nobel Prize 2007 to Grünberg und Fert is best known in this area. It is used in reading heads of hard disks.

For certain applications it is particularly important that the spin is transported along wide distances. Since it appears that in this area organic materials are superior to inorganic ones, this topical research area develops vividly. The research group Ziegler has 20 years of experience in the area of organic semiconductors. The now extended ultra high vacuum (UHV) system offers a unique set up, that allows to prepare organic and inorganic-organic hybrid materials under UHV conditions and analyze them in situ concerning their chemical composition, their geometrical and electronical structure, their electrical and, now, also, concerning their magnetic properties.