6533b83afe1ef96bd12a78c6
RESEARCH PRODUCT
Electron spin polarization in the photoemission of NEA GaAs1?x P x
K. ZähringerE. Reichertsubject
Physics and Astronomy (miscellaneous)Spin polarizationChemistryGeneral EngineeringGeneral ChemistryElectronPhotoelectric effectPolarization (waves)CathodeSpectral linelaw.inventionlawGeneral Materials ScienceIrradiationAtomic physicsCircular polarizationdescription
Negative electron affinity GaAs1−xPx-photocathodes emit spin-polarized electrons if irradiated with circularly polarized light. The spectra of spin polarization of photoelectrons emitted from crystals with different phosphorus contentx resemble each other in shape but shift to shorter wavelengths with increasingx. Polarization values up to 40% are observed for electrons from crystals withx=0 andx=0.38. Cathodes with higher phosphorus contents increasing fromx=0.65 tox=0.87 and tox = 1.0 deliver photoelectrons with decreasing degrees of spin polarization of 17%, 15%, and 9%, respectively, at maximum.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1982-12-01 | Applied Physics A Solids and Surfaces |