Phys. Rev. Lett. 89, 107206 (2002) [4 pages]Interlayer Magnetic Coupling Interactions of Two Ferromagnetic Layers by Spin Polarized TunnelingSee Also: Publisher's Note Received 6 May 2002; published 20 August 2002; publisher error corrected 8 October 2002 Magnetic interactions involving ferromagnetic layers separated by an insulating barrier have been studied experimentally on a fully epitaxial hard-soft magnetic tunnel junction: Fe/MgO/Fe/Co. For a barrier thickness below 1 nm, a clear antiferromagnetic interaction is observed. Moreover, when reducing the MgO thickness from 1 to 0.5 nm, the coupling strength increases up to J=-0.26 erg·cm-2. This behavior, well fitted by theoretical models, provides an unambiguous signature of the interlayer exchange coupling by spin-polarized quantum tunneling. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.107206
DOI:
10.1103/PhysRevLett.89.107206
PACS:
75.70.–i, 73.40.Rw, 73.43.Jn, 75.30.Et
See AlsoPublisher's Note: J. Faure-Vincent, C. Tiusan, C. Bellouard, E. Popova, M. Hehn, F. Montaigne, and A. Schuhl, Publisher’s Note: Interlayer Magnetic Coupling Interactions of Two Ferromagnetic Layers by Spin Polarized Tunneling [Phys. Rev. Lett. 89, 107206 (2002)], Phys. Rev. Lett. 89, 189902 (2002). |
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