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Giant enhancement of orbital moments and perpendicular anisotropy in epitaxial Fe/GaAs(100)

Xu, Y.B., Tselepi, M., Guertler, C.M., Vaz, C.A.F., Wastlbauer, G., Bland, J.A.C., Dudzik, E. and van der Laan, G. (2001) Giant enhancement of orbital moments and perpendicular anisotropy in epitaxial Fe/GaAs(100). Journal of Applied Physics, 89 (11). pp. 7156-7158. ISSN 1089-7550

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The spin and orbital magnetic moments and the perpendicular magnetic anisotropy of 8 and 33 monolayer epitaxial bcc Fe films grown on GaAs(100)-4×6 have been measured using x-ray magnetic circular dichronism and polar magneto-optical Kerr effect. Both the films have approximately the same spin moments of about 2.0µB close to that of the bulk value. The ultrathin film shows a giant orbital moment enhancement of about 300% with respect to the bulk value and a perpendicular interface anisotropy field H/s(Fe-GaAs) of the order of –5×10(4) Oe. This may be partially due to an increased degree of localization of electronic states at the Fe/GaAs interface associated with the atomic scale interface structure. © 2001 American Institute of Physics.

Item Type: Article
Copyright, Publisher and Additional Information: © 2001 American Institute of Physics. Available from the author's web site (Associated URL field).
Institution: The University of York
Academic Units: The University of York > Electronics (York)
Depositing User: Repository Officer
Date Deposited: 08 Jan 2007
Last Modified: 05 Aug 2007 18:25
Published Version: http://dx.doi.org/10.1063/1.1359473
Status: Published
Publisher: American Institute of Physics
Refereed: Yes
Identification Number: 10.1063/1.1359473
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/1889

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