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The Surface Electronic Band Structure CoS2(001)

Published online by Cambridge University Press:  01 February 2011

Ning Wu ,
Ya. B. Losovyj ,
Michael Manno ,
Chris Leighton  and
Peter Dowben
Ning Wu
Affiliation:
ningwu@bigred.unl.edu, University of Nebraska- Lincoln, Dept. of Physics and Astronomy and the Nebraska Center for Materials and Nanoscience, Lincoln, Nebraska, United States
Ya. B. Losovyj
Affiliation:
ylosovyj@lsu.edu, Louisiana State University, Center for Advanced Microstructures and Devices, Baton Rouge, Louisiana, United States
Michael Manno
Affiliation:
manno@cems.umn.edu, University of Minnesota, Department of Chemical Engineering and Materials Science, Minneapolis, Minnesota, United States
Chris Leighton
Affiliation:
leighton@tc.umn.edu, University of Minnesota, Department of Chemical Engineering and Materials Science, Minneapolis, Minnesota, United States
Peter Dowben
Affiliation:
pdowben@unl.edu, University of Nebraska- Lincoln, Dept. of Physics and Astronomy and the Nebraska Center for Materials and Nanoscience, Lincoln, Nebraska, United States
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Abstract

Angle-resolved photoemission was used to study the surface electronic band structure of ferromagnetic CoS2(below 120K) in high-quality single crystal samples. Strongly dispersing Co t2g bands are identified along the <100> k// direction. Fermi level crossings are identified along this Γ - X line (of the surface Brillouin zone) in higher resolution photoemission spectra, suggesting that the overall polarization may be controlled by the details of the band structure, particularly the surface band structure, rather than by exchange splitting on the Co atoms.

Keywords

photoemissionelectronic structurespintronic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1119: Symposium L – New Materials with High Spin Polarization and Their Applications , 2008 , 1119-L03-03
Copyright
Copyright © Materials Research Society 2009

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References

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