Abstract
We observe an enhanced spin-polarization and a reduction of surface sensitivity due to intermediate unoccupied electronic states in spin-resolved twophoton photoemission (2PPE) from ferromagnetic cobalt films. We discriminate 2PPE signals coming from initial and intermediate electronic states. This allows us to determine the influence of unoccupied quantum-well states in the two-photon transitions.
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CITATION STYLE
Winkelmann, A., Chiang, C. T., Pazgan, M., Peixoto, T. R. F., & Kirschner, J. (2015). Spin-selective excitation pathways in nonlinear photoemission from metal surfaces. In Springer Proceedings in Physics (Vol. 159, pp. 284–286). Springer Science and Business Media, LLC. https://doi.org/10.1007/978-3-319-07743-7_88
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