Role of multilayer relaxation on the magnetic coupling of bilayer Mn on Fe(001)

Ruqian Wu; Arthur J Freeman

doi:10.1016/S0304-8853(96)00024-8

Role of multilayer relaxation on the magnetic coupling of bilayer Mn on Fe(001)

Ruqian Wu, Arthur J Freeman

Northwestern University

Research output: Contribution to journal › Article

11 Citations (Scopus)

Abstract

Interfacial magnetic coupling in a bilayer of Mn on Fe(001) has been determined using the all-electron local density full potential linearized augmented plane wave method. Strikingly, the magnetic properties are very sensitive to the atomic structure, namely, the multilayer relaxation and the lattice constant in the lateral plane. The magnetic moment of the surface Mn appears to favor an antiferromagnetic coupling with the underlying Fe substrate, which explains some unusual experimental results. Since magnetic moments in the two Mn layers are very different (-2.76 μ_B for Mn(S) versus 1.09 μ_B for Mn(I)), a detectable net X-ray magnetic circular dichroism (MCD) signal is predicted for the antiferromagnetic Mn bilayer.

Original language	English
Pages (from-to)	89-93
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	161
DOIs	https://doi.org/10.1016/S0304-8853(96)00024-8
Publication status	Published - Aug 1996

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Keywords

Magnetic moment
Magnetic ordering
MCD spectrum
Surface multilayer relaxation

ASJC Scopus subject areas

Condensed Matter Physics

Cite this

Wu, R., & Freeman, A. J. (1996). Role of multilayer relaxation on the magnetic coupling of bilayer Mn on Fe(001). Journal of Magnetism and Magnetic Materials, 161, 89-93. https://doi.org/10.1016/S0304-8853(96)00024-8

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AB - Interfacial magnetic coupling in a bilayer of Mn on Fe(001) has been determined using the all-electron local density full potential linearized augmented plane wave method. Strikingly, the magnetic properties are very sensitive to the atomic structure, namely, the multilayer relaxation and the lattice constant in the lateral plane. The magnetic moment of the surface Mn appears to favor an antiferromagnetic coupling with the underlying Fe substrate, which explains some unusual experimental results. Since magnetic moments in the two Mn layers are very different (-2.76 μB for Mn(S) versus 1.09 μB for Mn(I)), a detectable net X-ray magnetic circular dichroism (MCD) signal is predicted for the antiferromagnetic Mn bilayer.

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10.1016/S0304-8853(96)00024-8