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Magnetism and Magnetic Interactions at Transition Metal Surfaces and Interfaces

Published online by Cambridge University Press:  03 September 2012

Ruqian Wu ,
Dingsheng Wang  and
A.J. Freeman
Ruqian Wu
Affiliation:
Department of Physics & Astronomy, Northwestern University, Evanston, IL 60208–3112
Dingsheng Wang
Affiliation:
Department of Physics & Astronomy, Northwestern University, Evanston, IL 60208–3112 Institute of Physics, Academia Sinica, Beijing 100080, P.R. China
A.J. Freeman
Affiliation:
Department of Physics & Astronomy, Northwestern University, Evanston, IL 60208–3112
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Abstract

In the exciting field of low dimensional magnetic systems including surfaces, interfaces and thin-films, local spin density (LSD) functional ab initio electronic structure calculations have played a key role by not only providing a clearer understanding of the experimental observations but also predicting new systems with desired properties. Our extensive calculated results demonstrate that: (i) Magnetic clean surfaces or interfaces with inert substrates undergo strong magnetic moment enhancements; (ii) the strong interaction with nonmagnetic transition metals diminishes (completely in some cases) the ferromagnetism and usually stabilizes the antiferromag-netic configuration. By including spin-orbit coupling as a perturbation, (i) reliable results for the Magneto-crystalline anisotropy of ultra-thin films can be obtained using the state-tracking procedure, although the anisotropy energy is a few tenths of a MeV; (ii) spectra of the Magneto-optical Kerr effects and magnetic circular dichroism in the soft x-ray region can be determined.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 313: Symposium Q1 – Magnetic Ultrathin Films, Multilayers and Surfaces/Magnetic Interfaces-Physics and Characterizations , 1993 , 541
Copyright
Copyright © Materials Research Society 1993

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