Spin polarization of the conduction bands and secondary electrons of Gd(0001)
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Department of Physics, University of Nebraska, Lincoln, Nebraska 68588 (United States)
Angle- and spin-resolved photoemission was utilized to investigate the 5{ital d} bulk bands and the surface state of Gd(0001) in the temperature range of 130{endash}350 K. The bulk bands at 1{endash}2 eV below the Fermi energy {ital E}{sub {ital F}} show Stoner-like behavior, while the temperature dependence of the surface state near {ital E}{sub {ital F}} indicates spin-mixing behavior due to fluctuating local 5{ital d} moments. The secondary electron spectra of the Gd surfaces both before and after initial oxygen adsorption show a polarization dip at low kinetic energies due to the extra scattering channel for minority electrons via the unoccupied 4{ital f} level. The temperature dependencies of the surface and bulk magnetization are separated using the spin polarization of the surface state and the bulk exchange splitting. {copyright} {ital 1996 American Institute of Physics.}
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 280073
- Report Number(s):
- CONF-951101--
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 79; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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