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AM: Magnetismus

AM 9: Poster: Magnetowid. (1-17), Dü. Schichten (18-34), Oberfl
ächenmag. (35,36), Mikr. Methoden (37-45), Mikromag. (46-58), Phasenüberg. (59-77), Spektroskop. (78-91), Nanokr.Mat.(92-96), Anisotrop. (97-101), Schmelzen(102-104),Sonst/postdeadl.(105-109)

AM 9.44: Poster

Tuesday, March 27, 2001, 14:45–19:00, Foyer S 3

Two-photon photoelectron emission microscopy of magnetic nanostructures — •F. Kronast, H.A. Dürr, and W. Eberhardt — Institut für Festkörperforschung,Forschungszentrum Jülich, 52425 Jülich

The interaction of high-intensity pulsed-laser radiation with surfaces can result in the emission of electrons after multiphoton absorption events. We investigated this process by combining a photoelectron emission microscope (PEEM) with a fsec-laser system. The spatial and angular distribution of photoelectrons was investigated for magnetic nanostructures grown on a lithographically patterned Si substrate. We show that for magnetic dots of 200 nm x 200 nm size there is a pronounced dependence of the emission characteristics on the light polarization. The influence of the sample mangetization was studied by analyzing the spin of the emitted photoelectrons.