Physics – Condensed Matter – Materials Science
Scientific paper
2010-04-21
Nature Materials 9, 579--585 (2010)
Physics
Condensed Matter
Materials Science
Single PDF file: 27 pages, 6 figures; version of 12/30/09; submitted to Nature Materials
Scientific paper
10.1038/nmat2785
Roughness-insensitive and electrically controllable magnetization at the (0001) surface of antiferromagnetic chromia is observed using magnetometry and spin-resolved photoemission measurements and explained by the interplay of surface termination and magnetic ordering. Further, this surface in placed in proximity with a ferromagnetic Co/Pd multilayer film. Exchange coupling across the interface between chromia and Co/Pd induces an electrically controllable exchange bias in the Co/Pd film, which enables a reversible isothermal (at room temperature) shift of the global magnetic hysteresis loop of the Co/Pd film along the magnetic field axis between negative and positive values. These results reveal the potential of magnetoelectric chromia for spintronic applications requiring non-volatile electric control of magnetization.
Belashchenko Kirill D.
Binek Christian
Caruso Anthony
Dowben Peter A.
He Xi
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