Spin polarization of the conduction bands and secondary electrons of Gd(0001)

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.362204· OSTI ID:280073

Li, D; Pearson, J; Bader, S D ^[1]; McIlroy, D N; Waldfried, C; Dowben, P A ^[2]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. 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

Related Subjects

36 MATERIALS SCIENCE
ADSORPTION
CONDUCTION BANDS
ELECTRON EMISSION
ELECTRONIC STRUCTURE
GADOLINIUM
MAGNETIZATION
OXYGEN
PHOTOEMISSION
SPIN ORIENTATION
SURFACE MAGNETISM
SURFACE STATES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K