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Evidence of exchange-induced spin polarization in the magnetic semiconductor EuS

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4 Author(s)
Muller, C. ; Freie Universität Berlin, Institut für Experimentalphysik, Arnimallee 14, 14195 Berlin, Germany ; Lippitz, H. ; Paggel, J.J. ; Fumagalli, P.

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The semiconducting character and the large spin moment of 7/2 μB of europium sulfite are important preconditions for applications in the field of spintronics. However, the low Curie temperature (TC=16.5 K) excludes EuS from commercial application. We have studied a variety of Co/EuS multilayer samples deposited in a molecular beam epitaxy system with varying numbers of layers and different single-layer thickness. Magneto-optic Kerr effect measurements at low temperatures (10 K) indicate an antiferromagnetic coupling between EuS and Co moments. © 2004 American Institute of Physics.

Published in:
Journal of Applied Physics  (Volume:95 ,  Issue: 11 )

Date of Publication: Jun 2004

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