Dresden 2003 – wissenschaftliches Programm
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MA: Magnetismus
MA 17: Magnetische Dünne Schichten II
MA 17.6: Vortrag
Mittwoch, 26. März 2003, 17:15–17:30, HSZ/04
X-ray magneto-optical reflection spectroscopy of buried antiferromagnetic films — •Peter M. Oppeneer1, Hans-Christoph Mertins2, Dirk Abramsohn2, Andreas Gaupp2, Sergio Valencia2, Wolfgang Gudat2, Jan Kunes1, and Claus Schneider1 — 1IFW Dresden — 2BESSY Berlin
It is shown that the spin-polarized electronic structure of antiferromagnetic materials can be investigated on an element-selective level using a versatile, novel x-ray magneto-optical spectroscopy in reflection. We demonstrate this with spectra observed at the Ni L3 absorption edge of two buried exchange-biased microstructures of current technological interest: NiO/Co and NiMn/Co, which contain the insulating antiferromagnet NiO, and the metallic antiferromagnet NiMn, respectively. The measured spectrum provides information about the exchange-split d-density of states of the antiferromagnetic atom.