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Spin Polarized Inverse Photoemission Study of Fe and Co Thin Films on W(001)

Published online by Cambridge University Press:  03 September 2012

Qing Cai ,
Recep Avci  and
Gerald J. Lapeyre
Qing Cai
Affiliation:
Department of Physics, Montana State University, Bozeman, MT 59717
Recep Avci
Affiliation:
Department of Physics, Montana State University, Bozeman, MT 59717
Gerald J. Lapeyre
Affiliation:
Department of Physics, Montana State University, Bozeman, MT 59717
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Abstract

Spin- (and angle-) resolved inverse photoemission spectroscopy (SPIPES) has beenused for studying magnetic thin films. The spin dependence of the unoccupiedelectronic structure has been investigated for in-situ-grown epitaxial, ultrathin Fe and Cofilms on W(001). The Fe overlayers have a square lattice and exhibit in-plane magneticremanence in the direction of the surface Brilluoin zone. Four or more atomic layersof Fe show bulklike SPIPES spectra with a majority spin peak at the Fermi energy (EF)and a broad minority peak 1.3 eV above EF The Co overlayers on W(001) showdistorted hexagonal structures in the plane with an atomic density twice that of theW(001) plane. Two atomic layers of Co show strong in-plane magnetic remanence withthe minority peak at 0.7 eV. The SPIPES results in general are consistent with thetheoretical electronic structure for momentum-conserving radiative transition from freeelectron-like bands down to the unoccupied 3d bands.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 151: Symposium G – Growth, Characterization and Properties of Ultrathin Magnetic Films and Multilayers , 1989 , 65
Copyright
Copyright © Materials Research Society 1989

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References

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