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Updated: Aug 29, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
Direct imaging and determination of the uncompensated spin density in exchange-biased CoO/(CoPt) multilayers
P Kappenberger1, S Martin, Y Pellmont
1Institute of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland. peter.kappenberger@unibas.ch
Abstract:
Magnetic force microscopy (MFM) measurements were performed on an exchange-biased CoO/(CoPt) multilayer sample at 7.5 K. Applying an external magnetic field of up to 7 T saturates the ferromagnetic layer and the remaining uncompensated antiferromagnetic spins at the antiferromagnet-ferromagnet interfaces are imaged with high lateral resolution. The coupling between the uncompensated spins and the spins in the ferromagnet are found to be antiferromagnetic. Quantitative analysis of the MFM images revealed that 7% of the spins at the interface are uncompensated and contribute to the exchange biasing.
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