Volume 79, Number 3, August 2007
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||19 July 2007|
Remote control of the Fe magnetic moment in magnetic heterostructures
Department of Physics, Ruhr-University Bochum - 44780 Bochum, Germany
2 Department of Physics, Uppsala University - Box 530, 75121 Uppsala, Sweden
3 Saint-Petersburg State University, Vasilevsky Ostrov - 10 linia 49, 199178, Saint-Petersburg, Russia
Corresponding author: email@example.com
Accepted: 15 June 2007
In magnetic superlattices with interlayer exchange coupling, not only the coupling strength but also the magnetic moment of the ferromagnetic layer can be altered non-locally by modifying the electronic structure of the non-magnetic spacer layer. Specifically, changes of the electronic structure of the V spacer layers in Fe/V (001) superlattices are seen to affect the adjacent Fe layers. By reversibly loading the V layer with hydrogen, the magnetic moment of Fe increases, whereas the induced magnetic moment in V remains unchanged. The nature of this remote and non-local control of the magnetic moment is connected with a d-electron charge transfer and effective shift of the Fermi level relative to the d-bands of Fe and V, as elucidated on the basis of self-consistent electronic structure calculations.
PACS: 75.70.Cn – Magnetic properties of interfaces (multilayers, superlattices, heterostructures) / 75.30.Et – Exchange and superexchange interactions / 75.50.Bb – Fe and its alloys
© Europhysics Letters Association, 2007
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